Don't get me wrong, I recognize the sheer brilliance and badassedness of this.
And I'm the first to admit that I inevitably drop my chain, miss-shift, over-correct, shim the wrong way, under-load, accidentally brake, and generally fuck things up when the going gets loose, fast, and shifty. So I can't argue that Shimano's development here is not useful.
But at some point, sooner or later (if not already), you are no longer riding a bicycle.
And we all know how that ends.
Electronic. Let there be light and all that.
But watch your 6, kid.
These things have a way of coming back in 20 years, even after you smashed the motherboard, and finding you.
Up, up, up.