The stupidest idea I have heard was Twitter.
After that, I changed the way I thought.
After that, I changed the way I thought.
Twitter just allows them to communicate publicly.
People use knife to cook food, but also use to same to commit murder.
It never occured to me that celebrities would start using the platform. I still don't think that Twitter would be anywhere near where it is now if not for the endorsement by many celebrities.
It's really just about taking the time to better understand an idea, and trying hard not to dismiss it.
That should be on the HN faq regarding "Show HN" posts.