

The sleeves from gastric bypass surgery. Lots of other medical devices have an obvious function, thinking of steel hip replacements or screws to bend badly broken bones. But the sleeve might perplex someone thousands of years from now.
This question is tough because I feel that our society has documented everything. Even the smallest item has articles written about it. But if a lot of that info was lost, things like bluetooth headphones might cause confusion. If technology doesn’t endure, will future generations think everyone had them to limit surrounding noises when in reality we introduce sound wirelessly.
I meant it more as he won’t have to worry because he doesn’t drink water like the rest of us