I would just add that internet requires some effort (great effort) to find the original person. And in the book, the distiction is a bit different: whatever so

I would just add that internet requires some effort (great effort) to find the original person. And in the book, the distiction is a bit different: whatever someone does in "real life", his body, face, voice... it's all the same. In small villages it's impossible to hide. In bigger cities at that time, it wasn't so big, people still know each other among his social circle. And it was easy to notice someone leaving his own circle and appearing in another. So, what internet gives you as a basic (easy to be anonymous, in the sense that commmon people perceive it, I'm not talking about using tor and so on), Jekyll had to blame on his drink. And blaming saves his face: wasn't he blaming it, he couldn't say that the "monster" was doing things that, in the end, he was trying to.... hyde.