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Imagine it’s morning, and you’re getting dressed for the day. As you’re putting on your sneakers, one of the laces breaks.
You could toss out the shoes, but they’re in good shape except for the broken lace, so you think of other solutions. You could knot or glue the broken lace back together. You could re-lace the shoe using only the longer part of the lace. You try to test the ideas until you find the one that works best. Welcome to the world of engineering — using what you know to invent, design, and build things that solve problems.