A childhood belief about technology

My mom worked, and still does work, for an accounting firm, so she faxes a lot of things. One time, when I was little, I was with her at work and she left me to go 'fax a letter' to someone. Till I was about thirteen I believed that you put a sealed and postaged stamped letter into a fax machine and it teleported it, letter and all, to the other fax machine and I was so excited we would have human sized teleporters within my lifetime. I think my delusion was shattered when I asked her if I could fax my Christmas thank you cards to my grandmother.