# Origin of Side Effects in YoYos?

**URL:** <https://forums.yoyoexpert.com/t/origin-of-side-effects-in-yoyos/299460>\
**Category:** David Metz\
**Created:** [February 28, 2019, 8:22pm UTC](https://forums.yoyoexpert.com/t/origin-of-side-effects-in-yoyos/299460 "2019-02-28T20:22:24Z")\
**Posts on this page:** 1\
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**Author:** ![AndreBoulay](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/andreboulay/32/69662_2.png) [@AndreBoulay](https://forums.yoyoexpert.com/u/AndreBoulay)\
**Post date:** [February 28, 2019, 8:22pm UTC](https://forums.yoyoexpert.com/t/origin-of-side-effects-in-yoyos/299460/1 "2019-02-28T20:22:24Z")

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Thanks so much for being here @da5id!

As you have mentioned in another thread - Side Effects were such an impressive discovery in modern yo-yo. I’m very curious about the development of them… How did it happen? Whose original idea? Was there an ‘Aha’ moment or more of a development over time? And are there earlier iterations of the design or did you knock it out of the park on the first try?

I :heart: Side Effects.

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