I just imagined a world without noobs where everyone is an expert. There's no room for errors because experts will likely behave like machines. Even experts atimes makes errors or dramatically changes their mind.
It's not about not making mistakes, it's about thinking before doing something. If you need more than 3 seconds, think for more than 3 seconds. If you can't do that, no amount of popups is going to stop you.You're thinking process is not as safe as you think it is, it can be attacked, by for example making you panick somehow, interesting isn't it !
For example:
An exchange just announced it's closing up shop soon, and you have lots of different coins on it, including bitcoin, now you must decide what to do, you worry that if you too late you will not get a good exchange price, and you must think, do I sell ? or do I extract and pay withdraw fees, the time is ticking, plus your sister just called and told you she is quite pissed that Trump won ! LOL and wants you to make some kind of report immediately ! LOL, you hear the distress in her voice, she didn't literally tell you she is pissed about Trump, but the emotion gets to you !
Just one little example of how somebody could "press your buttons".
Maybe you can think of something that makes you panick, recent panicks might be the recent fires in L.A. where people lost their homes, perhaps sleep deprived from all the stress, fleeing for their lives, not sure if their brains would still function properly after all of that, and they try and buy something with bitcoin...