Ninety percent of everything is crud.
The Peter Principle
In a hierarchy, every employee tends to rise to his level of incompetence.
A task always takes longer than you expect, even when you take into account Hofstadter’s Law.
If anything can go wrong, it will.
Adding manpower to a late software project makes it later.
The bearing of a child takes nine months, no matter how many women are assigned.
Any piece of software reflects the organizational structure that produced it
Another way of putting it:
If you have four groups working on a compiler, you’ll get a 4-pass compiler.
Given enough eyeballs, all bugs are shallow.
Software gets slower faster than hardware gets faster.
Time = a + b log2 ( D / S + 1 )
Which means: The time to acquire a target is a function of the distance to and the size of the target.
The time to make a decision is a function of the possible choices he or she has.
Time = b log2(n + 1)
People under time pressure don’t think faster.
The explanation requiring the fewest assumptions is most likely to be correct.
Whatever the state of a project, the time a project-leader will estimate for completion is constant.
Augustine’s Second Law of Socioscience
For every scientific (or engineering) action, there is an equal and opposite social reaction.
Clarke’s Third Law
Any sufficiently advanced technology is indistinguishable from magic.
The most ineffective workers are systematically moved to the place where they can do the least damage: management.
smart(employees) = log(employees), or “No matter who you are, most of the smartest people work for someone else.”
Every method you use to prevent or find bugs leaves a residue of subtler bugs against which those methods are ineffectual.