[smalltorch]

Are there any species you know of that would be able to interbred with each other? Why would that have been possible?

Sounds like humans to me, perhaps ones who could live longer?

Look, I think we know how these discussions go, I'm not sure they get anywhere. Your pretty sure you know what's going on, I'm pretty sure I know what's going on...

Id hope there would be caution in manipulating the formation of a human when there isn't a great way to test these things without observing the results after they are born without any significant confidence what was manipulated effected the outcome or had a desirable result. There is no world where this real world testing is not reckless.

[gherkinnn]

> Are there any species you know of that would be able to interbred with each other?

Yes, it is called hybridisation.

https://en.wikipedia.org/wiki/Hybrid_(biology)