> short-term memory is not composed of hard, fixed "slots" that fill up and overflow. Nevertheless it is a limited resource. > just press Esc to make sure It

> short-term memory is not composed of hard, fixed "slots" that fill up and overflow. Nevertheless it is a limited resource. > just press Esc to make sure It's better to press Esc twice. Otherwise there's a risk of terminal emulator interpreting a command as an escape sequence.