QA Is Not Every Thing, Once

It’s every thing, every time. As this high school principal and his minions discovered:

Westlake High School officials misspelled “education” on the diplomas distributed last weekend. It’s been the subject of mockery on local radio.

Principal Timothy Freeman says he sent back the diplomas once to correct another error. When the diplomas came back, no one bothered to check things they thought were right the first time.

In information technology, that happens most frequently with version control problems (in design) or new code that doesn’t play well with the other code. You need to test it (or proofread) it all from scratch every iteration; if you only check resolved issues, you’re going to be embarrassed.

(Link seen on Electric Venom.)

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