The other day, a colleague stumbled across the flowchart symbol for paper tape (that's the wavy box on the left), and was confused by it...
Hands up if you know what the point of it is!
Yep, pick me!
Nope, haven't the foggiest!
Okay then, what's the point?
He genuinely had no idea how paper tape was related to computing. To be fair it is a historical oddity, but even so if you know about the origin of computers (especially in relation to WW2 cryptography) then you should have heard about it.
That said I'll be impressed if anyone here has actually used paper tape...