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Cake day: June 26th, 2023

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  • …NeXTstep was built on mach and, although i’m unsure if any antecedents remain in macOS, it was certainly production-ready in its day; i remember a couple of decades ago there were stopgap versions of the HURD built on top of mach instead of their own microkernel but i thought that was only ever intended as a temporary workaround…

    …i presume on that basis that sustained developer interest was its greatest hurdle, no pun intended…

    edit:is this the post-mortem you mentioned?..


















  • …subtracting twelve maintains the same odds with ties ‘succeeding’ for the rolling adversary; some DMs instead subtract eleven and flip ties for the PC to always win, which is mathematically identical, but then you have to keep track of flipping tie-resolution back-and-forth depending upon who’s rolling…

    Perception +6, Trap DC 14 = Passive Perception 16, Trap +2
    (both have the same 65% chance of detection, 35% chance of staying hidden)

    …it becomes a pretty trivial exercise to invert any roll after you’ve done it once or twice…