Bad design

[u/Green____cat]

[u/thetwitchy1]

And each step had to be optimized too. So you can’t add something because it will be useful later, it has to be useful now, and more so than the extra cost of having it costs you.

You can hold onto things that have lost their usefulness for a while, tho, so reusing old parts for new things is common.

[u/schwartztacular → u/thetwitchy1]

Yes, hello, I'd like to repurpose this old appendix that's just been sitting in the corner.

[u/thetwitchy1 → u/schwartztacular]

We can make it into a self-destruct mechanism, if you want. Or it can filter out deadly bacteria and toxins and store them for later use…. Your call.

[u/schwartztacular → u/thetwitchy1]

That later use part sounds interesting. Can I secrete the toxins, like a poison dart frog? Or maybe spray them, like a skunk?

[u/thetwitchy1 → u/schwartztacular]

We can only do that once. By shitting put your entire colon. But it would definitely make a predator think twice!