# How is this magic trick done?

**URL:** <https://boards.straightdope.com/t/how-is-this-magic-trick-done/679426>\
**Category:** Cafe Society\
**Created:** [January 22, 2014, 3:21am UTC](https://boards.straightdope.com/t/how-is-this-magic-trick-done/679426 "2014-01-22T03:21:05Z")\
**Posts on this page:** 1\
**Showing post:** 46

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**Author:** ![FXMastermind](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fxmastermind/32/7289_2.png) [@FXMastermind](https://boards.straightdope.com/u/FXMastermind)\
**Post date:** [January 22, 2014, 6:18pm UTC](https://boards.straightdope.com/t/how-is-this-magic-trick-done/679426/46 "2014-01-22T18:18:13Z")

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> [@Penn and Teller Fool Us ("Spoilers" OK)](https://boards.straightdope.com/t/penn-and-teller-fool-us-spoilers-ok/585996/52):
>
> And on some further and final analysis, I speculate that Einhorn had a “set” of envelopes ready for each possible iteration of the serving trays, and produced the relevant envelope set once he knew where each meal was placed.

:smack:

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