Well, you can help nurture it. Prehaps instead of speaking how about how it couldn't work think about what you'd need to do to make it work or where it could work. Tend to the garden!
> think about what you'd need to do to make it work
"This idea will probably work once we can develop just a few new basic technologies that it depends on (time travel, antigravity, unlimited free energy, faster-than-light communication, ...)"
"This idea will probably work once we can develop just a few new basic technologies that it depends on (time travel, antigravity, unlimited free energy, faster-than-light communication, ...)"