"Wouldn't it be easier to take notes on your omni?"

Hi there, Midoriya. Robby isn't one to try and nosy on what a guy is saying, or writing, and he hasn't been doing that here, either -- but he can hear and see the guy at work, that he's been sneaking a few glances during this note-taking time of his.

And it's a suggestion given with curiosity, because maybe Midoriya's already tried that before. But with the way he's going on -- both by hand and with his talking --, Robby wonders if the guy isn't asking for a hand cramp.