Bertram, a hapless inventor, accidentally created the first Wi-Fi network in 1971. His toaster, which had been left on, was emitting a peculiar signal that resonated with the local ham radios, causing them to... well, not actually do anything useful.
But, in the words of Bertram himself: "I meant to create a network for my toaster, not the world!"
Read the full story of Bertram's invention Meet Bertram's Toast Brother, the true hero of the tale