作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站

Interesting programming laws. 

Bove's Theorem
The remaining work to finish in order to reach your goal increases as
the deadline approaches.

Brook's Law
Adding manpower to a late software project makes it later.

Cann's Axiom
When all else fails, read the instructions.

Deadline-Dan's Demon
Every task takes twice as long as you think it will take. If you
double the time you think it will take, it will actually take four
times as long.

Demian's Observation
There is always one item on the screen menu that is mislabeled and
should read "ABANDON HOPE ALL YE WHO ENTER HERE."

Dr. Caligari's Come-Back
A bad sector disk error occurs only after you've done several hours
of work without performing a backup.

Finagle's Rules:

1. To study an application best, understand it thoroughly before you
   start.
2. Always keep a record of data. It indicates you've been working.
3. Always draw your curves, then plot the reading.
4. In case of doubt, make it sound convincing.
5. Program results should always be reproducible. They should all
   fail in the same way.
6. Do not believe in miracles. Rely on them.

Franklin's Rule
Blessed is the end user who expects nothing, for he/she will not be
disappointed.

Gilb's Law of Unreliability

1. At the source of every error which is blamed on the computer you
   will find at least two human errors, including the error of blaming
   it on the computer.
2. Any system which depends on human reliability is unreliable.
3. Undetectable errors are infinite in variety, in contrast to
   detectable errors, which by definition are limited.
4. Investment in reliability will increase until it exceeds the
   probable cost of errors, or until someone insists on getting
   some useful work done.

Gummidge's Law
The amount of expertise varies in inverse proportion to the number
of statements understood by the general public.

Harp's Corollary to Estridge's Law
Your "IBM PC-compatible" computer grows more incompatible with every
passing moment.

Heller's Law
The first myth of management is that it exists.

Hind's Law of Computer Programming

1. Any given program, when running, is obsolete.
2. If a program is useful, it will have to be changed.
3. If a program is useless, it will have to be documented.
4. Any given program will expand to fill all available memory.
5. The value of a program is proportional to the weight of its
   output.
6. Program complexity grows until it exceeds the capability of the
   programmer who must maintain it.
7. Make it possible for programmers to write programs in English,
   and you will find that programmers cannot write in English.

Hoare's Law of Large Programs
Inside every large program is a small program struggling to get out.

The Last One's Law of Program Generators
A program generator creates programs that are more "buggy" than the
program generator.

Meskimen's Law
There's never time to do it right, but always time to do it over.

Murphy's Fourth Law
If there is a possibility of several things going wrong, the one
that will cause the most damage will be the one to go wrong.

Murphy's Law of Thermodynamics.
Things get worse under pressure.

Ninety-Ninety Rule of Project Schedule
The first ninety percent of the task takes ninety percent of the
time, and the last ten percent takes the other ninety percent.

Nixon's Theorem
The man who can smile when things go wrong has thought of someone
he can blame it on.

Nolan's Placebo
An ounce of image is worth a pound of performance.

Osborn's Law
Variables won't constants aren't.

O'Toole's Commentary on Murphy's Law
Murphy was an optimist.

Peer's Law
The solution to a problem changes the problem.

Rhode's Corollary to Hoare's Law
Inside every complex and unworkable program is a useful routine
struggling to to be free.

Robert E. Lee's Truce
Judgement comes from experience; experience comes from poor judgement.

Sattinger's Law
It works better if you plug it in.

Shaw's Principle
Build a system that even a fool can use, and only a fool will want to
use it.

Snafu Equations

1. Given any problem containing N equations, there will be N+1
   unknown.
2. An object or bit of information most needed will be least
   available.
3. Any device requiring service or adjustment will be least
   accessable.
4. Interchangeable device's won't.
5. In any human endeavor, once you have exhausted all possibilities
   and fail, there will be one solution, simple and obvious, highly visible
   to everyone else.
6. Badness comes in waves.

Thoreau's Theories of Adaptation

1. After months of training and you finally understand all of a
   program's commands, a revised version of the program arrives
   with an all-new command structure.
2. After designing a useful routine that gets around a familiar "bug"
   in the system, the system is revised, the "bug" is taken away, and
   you're left with a useless routine.
3. Efforts in improving a program's "user friendliness" invariably
   lead to work in improving user's "computer literacy."
4. That's not a "bug," that's a feature!

Weinberg's Corollary
An expert is a person who avoids the small errors while sweeping on
to the grand fallacy.

Wood's Axiom
As soon as a still-to-be-finished computer task becomes a life-or-death
situation, the power fails.

Zymurgy's First Law of Evolving System Dynamics
Once you open a can of worms, the only way to recan them is to use
a larger can.

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