He hasn't actually peeked at the diary for a while, though admittedly it's probably mostly because there's been so much drama lately he hasn't had time to think about it! The spreadsheet will certainly get an amused chuckle when he finds it, though.
"Perhaps," he says, rather doubtfully. "I think we really need some other people as well - people who are a bit more invested in actually getting out of here. Or even just people with a different viewpoint, who can come at things from a different angle, see things we haven't thought of before."