She wanted us to have different blood colours, like her trolls. That was also how she wanted us to reproduce. It didn't go well.

[His eyebrows flicker up.] There's an easy way to test this on a living thing, dude. Grab two plants of the same kind and see how they fuse. If the results are decent, you can probably make a mutant frog without a stain on your conscience and deep personal regrets.

[Like there's still Doubt, it could go badly wrong, but at least it tests the fusing-living-things options without potentially damaging actual lives.

He doesn't know how to talk to Dave, so he is doing his best effort of just dealing with John.]