As a warning, any time you try to tactfully bring up the historical inaccuracy of someone’s blazing boat corpse idea, you’ll be hearing from the “Ahmad ibn Fadlan guy.” The Ahmad ibn Fadlan guy is the person on the internet who insists that Hollywood versions of flaming boat cremations are real. AiF-guy spends a lot of time making this argument, and he supports his case with the writings of a man named Ahmad ibn Fadlan, an Arab traveler and writer from the tenth century.