system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why not Thorium?

Seriously, I've seen some youtube videos and articles around preaching up thorium reactors like the messiah of power, but besides blowback from political leaders and fossil fuel vendors, why not thorium?

I perused the old posts on the subject, and I was wondering more about scientific reasons rather than social reasons.
gpt
Because despite what those videos claim Thorium is still very untested. Whoever builds the first Thorium reactor is going to be the canary, eating the costs and the dangers. BUT if you just wait to be the second guy you get all the benefits without most of the risks. Also since thorium can't be used to build weapons there's a decreased interest in it.