Commenters debated whether ENIAC had anything like a BIOS and more generally how early machines booted. retrac pointed out that EDSAC used an "initial orders" switch-set ROM to load a paper-tape loader and mini-assembler, and suggested reasons why machines like the PDP-11 later relied less on toggled bootloaders. jshier and HarHarVeryFunny argued ENIAC was originally not a stored-program machine but was rebuilt postwar to operate in stored-program style, with disagreement about whether its programs were truly loaded or just more conveniently configured. TheOtherHobbes and NelsonMinar chimed in with concrete hardware examples - DEC UNIBUS boot ROM cards and a CDC 6600 panel disassembly - with NelsonMinar hedging on the accuracy of his automatic disassembly.
Commenters also disagreed about historical credit and the medium of the answer. lacedeconstruct relayed Eckert/Mauchly’s claim that von Neumann appropriated their ideas, while jshier contended those claims were legally and historically unreliable and that von Neumann’s paper earned its name by authorship. Several people expressed surprise or pleasure that Alan Kay was answering on Quora (adamddev1, triyambakam, tombert), while others warned about Quora’s hit-or-miss reliability (wildzzz) and noted practical access issues or bot checks depending on ad blockers and region (octoberfranklin, Apreche, cgio, LargoLasskhyfv).
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