Kernel Evolution | KernelTrap

"In bacteria (and viruses), duplication of DNA/RNA is a big cost of living in general, and as a result there is *much* less junk DNA. So in an evolutionary sense, it's much closer to what the kernel should have (with occasional duplication of code and interfaces to allow new functionality, but rather aggressive pruning of the excess baggage). In other words, all of these choices are a matter of 'balance'. In some areas, excess code is not a sufficient downside, and we keep even broken source code around with no actual function, 'just because' (or rather, because the cost of carrying it around is so small that nobody cares)."

Kernel Evolution | KernelTrap

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