Real Hacker vs Movie Hacker

real hacker: So you say you're gonna break into our local nuclear power plant? I really don't think that's possible
movie hacker: *types a few keystrokes* I'm in
real hacker: But the power plant's computers aren't even connected to the internet
movie hacker: I said I'm in. Now I'll cause a meltdown *types a few keystrokes* Done
real hacker: What do you mean done? There have to be many redundant safeguards in place to stop a meltdown. In any case, a meltdown would take time.
movie hacker: Want me to break into the CIA next?
real hacker: I don't even think you should attempt to...
movie hacker: *types a few keystrokes* Too late. I'm in