

The headline is misleading if you are familiar with bloom filters.
TL;DR: the interesting thing here isn’t decreased false positive rate (multibit bloom filters are common), but the idea to put the relevant bits together. Basically you use a hash to pick a chunk of bits (32 bits in this case), then use more hashes to pick the bits within this chunk.
It is a tradeoff between accuracy (completely independent hashes would be less likely to have collisions leading to false positives) and performance (all relevant bits for the object you’re looking up will be together and the lookup will trigger at most one cache miss / memory access).







Absolutely agree with the fact that mAh should never have been used as a measurement of battery capacity, but increasing the voltage (while keeping the same actual capacity in Wh) makes the mAh rating lower, not higher.
1 Wh 1 V battery can provide 1 A (1000 mA) for an hour (1 V * 1 A = 1 W, 1 Wh / 1 W = 1 h) - that would be 1000 mAh.
1 Wh 2 V battery can only provide 1 A for half an hour (2 V * 1 A = 2 W, 1 Wh / 2 W = 0.5 h), and that gives you only 500 mA.