5 ms·

And the second...

• DrewRWx 13y ago
  And the third can be a real strain on the wrist.
  • RBerenguel 13y ago
    Yes, and rewriting is the real pain, actually.
• vanderZwan 13y ago
  That's actually the tricky bit, because often you're just thinking really hard that you're thinking really hard about the problem.
  • RBerenguel 13y ago
    Or thinking about the wrong attack, and giving up. Or just thinking hard about how to define something... Or... Research is hard.