Personally, I don't need a drink to put me in harms way when rearranging cables.
Try it with your eyes closed next time... Works for me!
Well, mostly. Painters tape helps too.
I can't tell you though, how many times I've put one ch into one set of in or outputs, and the other into an entirely different set. Yikes! Simple enough to fix, but initially startling nonetheless.
of course, with my rig, I've no access behind it so it'll all get wired from the front by feel alone anyway.
I've thankfully gotten into the habit of doing any change with things unplugged and turned off as well, as sometimes them switches turn themselves on without my permission.