Sturgeon's Law prov.
"Ninety percent of everything is crap". Derived from a quote
by science fiction author Theodore Sturgeon, who once said,
"Sure, 90% of science fiction is crud. That's because 90% of
everything is crud." Oddly, when Sturgeon's Law is cited, the
final word is almost invariably changed to `crap'. Compare Hanlon's Razor, Ninety-Ninety Rule. Though this
maxim originated in SF fandom, most hackers recognize it and are
all too aware of its truth.