i've compared .wav and .flac and couldn't tell the difference. the biggest issue with .wav or any file that you store on a computer is data corruption. .wav files have absolutely no built in error correction so the data can theoretically become minutely corrupted though still play and you might never know. .flac has built in error correction, if it's corrupted at all, it won't play. the pianist analogy is specious at best. any modern and well-maintained computer would have no issue decoding the data from .flac or .alac files.
