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Thomas Thwaites: How I built a toaster -- from scratch

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What does a module promise its callers? →Try replacing a module whose callers rely on its incidental return order. Start with what the interface says, then trace the decisions it hides and the behaviors people have learned to expect.This video helps answer · How long must “it heats” hold to count as delivery?

Caption notes

Thomas Thwaites dismantles a cheap toaster and tries to produce a handful of its materials himself. His device heats briefly before the element melts, separating assembly from sustained operation as acceptance criteria.

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Original passages · 2
that, inside this object, which I'd bought for just 3.49 pounds, there were 400 different bits made out of a hundred-plus different materials.
Thomas Thwaites: How I built a toaster -- from scratch · ▶ 1:39–1:51
And for about five seconds, the toaster toasted, but then, unfortunately, the element kind of melted itself.
Thomas Thwaites: How I built a toaster -- from scratch · ▶ 10:31–10:40

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