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That feels like adding an unnecessary step, though.

If you make it so that you can only pick one seed, and if you pick up the other, the first returns to its spot, you succeed in capturing all the functionality you want, but with one less layer of abstraction.

Especially since the videos of "how does this work" appear over top of the seed. Going near the need you want to test to see what it does, but not touching it, feels super unintuitive.