Why spend money...
...on something 4chan already knows?
Many flaws have been found by people just mucking around, in the same way kids find every nook and cranny in a game by messing and not doing as the game strategy suggests.
I remember a lovely flaw being found in just this manner in Commodore basic on their CBM PET, where the remark statement could be utilised to create some very interesting and non-intuitive results. Now harking back to those days, when I was poring over the ins and outs of Boolean, half adders and the like, a rather tedious and mind numbing task was to create truth tables, which basically shown the output for every combination of inputs, and thus prove the logic worked.
Truth tables for something as simple as an half adder circuit, were...simple, but that is where this Herculean task starts - to find the flaws, you do a truth table for the entire program.
Think tower of Babel, except most of the books are word perfect and the madness of finding badly written books can be heaved over to a suitably crafted program that runs for not quite an eternity.
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