# X07 · Reversible-response lab · supplementary Day 17

**Choose/make:** Make two paper options; separate proposed, approved for paper, tried and observed.

**Source/conditions:** Adult approval covers available paper only, not public services.

**Useful product:** Considered choice with honest status/effect.

**Inspect/extend:** Name unintended effects and evidence needed; no decorated poster or many options required.

Offer 10–25 minutes split over sessions; a directed part/private explanation can suffice. Describe actual making/use only if occurred. Keep/change/defer/stop allowed; no X replaces held criterion or completes annual strand.