Andrew is very sad, because he is probably going to have to replace his calculator, and he’s had that calculator since 1992. It is a TI-85, and you can’t even get those anymore!
But the trusty ol’ TI-85 is on its last legs. Today the screen went blank after only 20 seconds even though he set the auto shutoff for 2 minutes. Not only that, but it cleared all the variables he had stored for that day!
What, you don’t have a list of variables you are going to need for the day?