He looked at me like I'd just suggested he go tandem skydiving with an elephant as his instructor, then shook his head, swivelled his chair around, resumed tapping at keys.
I shrugged, said 'what?', rolled my chair over beside him. His fingers poised, his head raised, his mouth opened as if he was about to share a thought.
But instead, he kept it to himself.
I wondered, What was his problem? I was only trying to help.
Then I remembered: he was afraid of heights. And elephants.