If I only have to try 11 things for one of them to be LED lights or electric cars, I'd better get trying. Sure, I might have to empty a wastebasket at some point, but I'll just pay someone for that.
Which prior comment? Top level offers two options plus an 'etc.', second comment adds another and says 'could be', and then first reply to you offers other tech that took decades of R&D to suggest we can't rule out memristors. I don't see what you're referring to.