Good point. For most usage the difference between a log
factor and a constant is pretty much a non-issue. Sure
theoretically a log factor will eventually dwarf any
constant in the end, but in practice it doesn't tend to
work that way.
The general rule of thumb is that an exponential performance
issue keeps your program from running, a quadratic one
will work fine but keeps you from scaling well, and
a logarithmic one is about as big a deal as a poor constant.
(And yes, I know Dominus knows all this. This is for
everyone else's benefit.)
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