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De - Pt| Proverbs, aphorisms, quotations (English) | by Linux fortune |
| ... an anecdote from IBM's Yorktown Heights Research Center. When a programmer used his new computer terminal, all was fine when he was sitting down, but he couldn't log in to the system when he was standing up. That behavior was 100 percent repeatable: he could always log in when sitting and never when standing. Most of us just sit back and marvel at such a story; how could that terminal know whether the poor guy was sitting or standing? Good debuggers, though, know that there has to be a reason. Electrical theories are the easiest to hypothesize: was there a loose with under the carpet, or problems with static electricity? But electrical problems are rarely consistently reproducible. An alert IBMer finally noticed that the problem was in the terminal's keyboard: the tops of two keys were switched. When the programmer was seated he was a touch typist and the problem went unnoticed, but when he stood he was led astray by hunting and pecking. -- "Programming Pearls" column, by Jon Bentley in CACM February 1985 | |
| Unfortunately, most programmers like to play with new toys. I have many friends who, immediately upon buying a snakebite kit, would be tempted to throw the first person they see to the ground, tie the tourniquet on him, slash him with the knife, and apply suction to the wound. -- Jon Bentley | |
