Hi! Just so you know, you can click on the $ up there to support XKCDB. (This box will go away after you vote once.)

#681 (+1444/-446)
<Shrdlu> I was reading my physics prof's text and came upon this sentence:
<Shrdlu> 'In previous examples we have found it convenient to assume reality; henceforth we will no longer thus constrain ourselves.'
<Shrdlu> Took me a moment to figure out that he was talking about assuming a variable was real-valued.
<Shrdlu> For a brief instant I thought it could be the best physics class I'd ever taken.