Yesterday. Me to three students: "Okay, you have your PC. Here is a USB key, please put your files in it."
I leave them be to attend to other students and find them three minutes later fumbling around, all with their file open on their PC and none in the USB key.
Me: "okay, give me this." Three seconds later, the three files are in the USB key and the students look at me as if I was a great wizard.
This is today's kids computer literacy for you.