Useless stuff in practice. Kaku is an entertainment genius cause he managed to make it not absolutely boring. I suppose that's the only practical utility of string theory: selling documentaries on the History channel.

I’ll check these sources out, Thankyou 🤙🏼

I once watched a documentary of the history of string theory that made the case string theorists have never actually made any empirical ground and they're always promising results for funding that they never deliver on.

What do you think of it, aside from a casual interest?