SNAFU Equations: 1) Given any problem containing N equations, there will be N+1 unknowns. 2) An object or bit of information most needed will be least available. 3) Any device requiring service or adjustment will be least accessible. 4) Interchangeable devices wont. 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.