the 640K quote
loreops cultureprogramming
The famous line '640K ought to be enough for anybody', attributed to Bill Gates, who has repeatedly denied ever saying it.
No primary source has ever surfaced for the quote, and Gates has publicly denied it more than once, noting that nobody involved in the PC's memory limits thought them permanent. The 640 KB ceiling itself was real, an artifact of the original IBM PC memory map, which is why the line felt plausible enough to stick. It survives as the canonical parable about underestimating future requirements, pinned to a man who never said it.
The claim that Bill Gates said 640K ought to be enough for anybody is the most repeated quotation in computing history, and there is no evidence he said it. Gates denied it repeatedly and with visible irritation, no contemporaneous source has ever been produced, and the earliest attributions appear years after the supposed remark.
The reason it persists is that it feels true. The 640K limit was real, it came from the IBM PC's memory map reserving the upper portion of the first megabyte for hardware, and a generation of users genuinely fought it. Attaching a famous name to a shared frustration produces a story that explains the annoyance and assigns it a culprit, which is more satisfying than an architectural decision nobody remembers making.
It belongs with the room 404 story and the first computer bug as a case study in how technical folklore forms. A memorable quotation, a plausible speaker, endless repetition, and eventually the repetition becomes the source. The useful habit it argues for is asking where a famous quotation was first recorded, because the answer is often that nobody knows, and the people best positioned to deny it have been denying it for decades.
Disputed / commonly mistold A popular version of this story is inaccurate - see the note above.