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WIP: Added more bias
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@ -4344,10 +4344,182 @@ public static class BiasCatalog
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],
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};
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};
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private static readonly Bias STATUS_QUO_BIAS = new()
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{
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Id = new Guid("b9e05a25-ac09-407d-8aee-f54a04decf0b"),
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Category = BiasCategory.NEED_TO_ACT_FAST,
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Description =
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"""
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# Status Quo Bias
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A status quo bias or default bias is a cognitive bias which results from a preference for the maintenance
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of one's existing state of affairs. The current baseline (or status quo) is taken as a reference point,
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and any change from that baseline is perceived as a loss or gain. Corresponding to different alternatives,
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this current baseline or default option is perceived and evaluated by individuals as a positive.
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Status quo bias should be distinguished from a rational preference for the status quo ante, as when the
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current state of affairs is objectively superior to the available alternatives, or when imperfect information
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is a significant problem. A large body of evidence, however, shows that status quo bias frequently affects
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human decision-making. Status quo bias should also be distinguished from psychological inertia, which refers
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to a lack of intervention in the current course of affairs.
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The bias intersects with other non-rational cognitive processes such as loss aversion, in which losses
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comparative to gains are weighed to a greater extent. Further non-rational cognitive processes include
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existence bias, endowment effect, longevity, mere exposure, and regret avoidance. Experimental evidence
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for the detection of status quo bias is seen through the use of the reversal test. A vast amount of
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experimental and field examples exist. Behaviour in regard to economics, retirement plans, health, and
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ethical choices show evidence of the status quo bias.
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""",
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Related = [
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new Guid("b81482f8-b2cf-4b86-a5a4-fcd29aee4e69"), // ENDOWMENT_EFFECT
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new Guid("ad32d669-fc79-44c9-a570-609e1ccdc799"), // OMISSION_BIAS
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new Guid("ad3ed908-c56e-411b-a130-8af8574ff67b"), // LOSS_AVERSION
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],
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Links =
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[
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"https://en.wikipedia.org/wiki/Status_quo_bias",
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],
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};
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private static readonly Bias SOCIAL_COMPARISON_BIAS = new()
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{
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Id = new Guid("09527928-6417-4eea-9719-d8ed4748691f"),
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Category = BiasCategory.NEED_TO_ACT_FAST,
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Description =
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"""
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# Social Comparison Bias
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Social comparison bias is the tendency to have feelings of dislike and competitiveness with someone seen as
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physically, socially, or mentally better than oneself. Social comparison bias or social comparison theory is
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the idea that individuals determine their own worth based on how they compare to others. The theory was
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developed in 1954 by psychologist Leon Festinger. This can be compared to social comparison, which is
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believed to be central to achievement motivation, feelings of injustice, depression, jealousy, and people's
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willingness to remain in relationships or jobs. The basis of the theory is that people are believed to
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compete for the best outcome in relation to their peers. For example, one might make a comparison between the
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low-end department stores they go to frequently and the designer stores of their peers. Such comparisons may
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evoke feelings of resentment, anger, and envy with their peers. This bias revolves mostly around wealth and
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social status; it is unconscious and people who make these are largely unaware of them. In most cases, people
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try to compare themselves to those in their peer group or with whom they are similar.
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""",
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Related = [],
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Links =
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[
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"https://en.wikipedia.org/wiki/Social_comparison_bias",
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],
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};
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private static readonly Bias DECOY_EFFECT = new()
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{
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Id = new Guid("c8a532e9-5958-4894-aa0d-29ed6412780f"),
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Category = BiasCategory.NEED_TO_ACT_FAST,
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Description =
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"""
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# Decoy Effect
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In marketing, the decoy effect (or attraction effect or asymmetric dominance effect) is the phenomenon
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whereby consumers will tend to have a specific change in preference between two options when also presented
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with a third option that is asymmetrically dominated. An option is asymmetrically dominated when it is
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inferior in all respects to one option; but, in comparison to the other option, it is inferior in some
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respects and superior in others. In other words, in terms of specific attributes determining preferences,
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it is completely dominated by (i.e., inferior to) one option and only partially dominated by the other.
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When the asymmetrically dominated option is present, a higher percentage of consumers will prefer the
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dominating option than when the asymmetrically dominated option is absent. The asymmetrically dominated
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option is therefore a decoy serving to increase preference for the dominating option. The decoy effect
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is also an example of the violation of the independence of irrelevant alternatives axiom of decision
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theory. More simply, when deciding between two options, an unattractive third option can change the
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perceived preference between the other two.
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The decoy effect is considered particularly important in choice theory because it is a violation of the
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assumption of "regularity" present in all axiomatic choice models, for example in a Luce model of choice.
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Regularity means that it should not be possible for the market share of any alternative to increase when
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another alternative is added to the choice set. The new alternative should reduce, or at best leave unchanged,
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the choice share of existing alternatives. Regularity is violated in the example shown below where a new
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alternative C not only changes the relative shares of A and B but actually increases the share of A in
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absolute terms. Similarly, the introduction of a new alternative D increases the share of B in absolute
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terms.
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## Example
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Suppose there is a consideration set (options to choose from in a menu) that involves smartphones. Consumers
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will generally see higher storage capacity (number of GB) and lower price as positive attributes; while some
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consumers may want a device that can store more photos, music, etc., other consumers will want a device that
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costs less. In Consideration Set 1, two devices are available:
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Consideration Set 1:
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- A: $400, 300GB
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- B: $300, 200GB
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In this case, some consumers will prefer A for its greater storage capacity, while others will prefer B for
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its lower price.
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Now suppose that a new player, C, the "decoy", is added to the market; it is more expensive than both A, the
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"target", and B, the "competitor", and has more storage than B but less than A:
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Consideration Set 2:
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- A (target): $400, 300GB
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- B (competitor): $300, 200GB
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- C (decoy): $450, 250GB
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The addition of decoy C — which consumers would presumably avoid, given that a lower price can be paid for a
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model with more storage—causes A, the dominating option, to be chosen more often than if only the two choices
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in Consideration Set 1 existed; C affects consumer preferences by acting as a basis of comparison for A and B.
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Because A is better than C in both respects, while B is only partially better than C, more consumers will
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prefer A now than did before. C is therefore a decoy whose sole purpose is to increase sales of A.
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Conversely, suppose that instead of C, a player D is introduced that has less storage than both A and B, and
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that is more expensive than B but not as expensive as A:
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Consideration Set 3:
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- A (competitor): $400, 300GB
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- B (target): $300, 200GB
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- D (decoy): $350, 150GB
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The result here is similar: consumers will not prefer D, because it is not as good as B in any respect. However,
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whereas C increased preference for A, D has the opposite effect, increasing preference for B.
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""",
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Related = [],
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Links =
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[
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"https://en.wikipedia.org/wiki/Decoy_effect",
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],
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};
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private static readonly Bias REACTANCE = new()
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{
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Id = new Guid("d3c2cb4b-ec29-4cf3-a485-9a98e9f1f223"),
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Category = BiasCategory.NEED_TO_ACT_FAST,
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Description =
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"""
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# Reactance
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In psychology, reactance is an unpleasant motivational reaction to offers, persons, rules, regulations, advice, or
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recommendations that are perceived to threaten or eliminate specific behavioral freedoms. Reactance occurs when an
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individual feels that an agent is attempting to limit one's choice of response and/or range of alternatives.
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Reactance can occur when someone is heavily pressured into accepting a certain view or attitude. Reactance can
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encourage an individual to adopt or strengthen a view or attitude which is indeed contrary to that which was
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intended — which is to say, to a response of noncompliance — and can also increase resistance to persuasion.
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Some individuals might employ reverse psychology in a bid to exploit reactance for their benefit, in an attempt
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to influence someone to choose the opposite of what is being requested. Reactance can occur when an individual
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senses that someone is trying to compel them to do something; often the individual will offer resistance and
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attempt to extricate themselves from the situation.
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Some individuals are naturally high in reactance, a personality characteristic called trait reactance.
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""",
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Related = [],
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Links =
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[
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"https://en.wikipedia.org/wiki/Reactance_(psychology)",
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],
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};
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#endregion
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#endregion
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public static readonly IReadOnlyDictionary<Guid, Bias> ALL_BIAS = new Dictionary<Guid, Bias>
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public static readonly IReadOnlyDictionary<Guid, Bias> ALL_BIAS = new Dictionary<Guid, Bias>
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{
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{
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{ REACTANCE.Id, REACTANCE },
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{ DECOY_EFFECT.Id, DECOY_EFFECT },
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{ SOCIAL_COMPARISON_BIAS.Id, SOCIAL_COMPARISON_BIAS },
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{ STATUS_QUO_BIAS.Id, STATUS_QUO_BIAS },
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{ AMBIGUITY_EFFECT.Id, AMBIGUITY_EFFECT },
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{ AMBIGUITY_EFFECT.Id, AMBIGUITY_EFFECT },
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{ INFORMATION_BIAS.Id, INFORMATION_BIAS },
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{ INFORMATION_BIAS.Id, INFORMATION_BIAS },
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{ BELIEF_BIAS.Id, BELIEF_BIAS },
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{ BELIEF_BIAS.Id, BELIEF_BIAS },
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