ASSERT: Learn by Testing

My 6-year-old daughter received a microscope kit as a gift. It’s not the 50’s-style die-cast behemoth I had as a kid, with all it’s frustrating sample mounting and focus issues. No, this is 2009, and this perfect kids’ ‘scope requires no focusing and is small enough for her to wear as a necklace. And, it’s pink which makes the necklace prospect all the more attractive.

I’ve been teaching her a little bit about science and encouraging her questions. But really, I am passive, watching her formulate theories and test them. Our freezer is full of “samples” from the last Brooklyn snowfall.

She is learning to learn by testing, to come up with an assertion she believes to be correct, and then by observation rule it in or out. The application to programming and building systems is obvious, but easy to forget. I’ve sometimes fallen into the trap of assuming something is true, and relying on that assumption without a proper assertion and test. With the overwhelming amount of reading material available on what works and what doesn’t from “cloud computing” to scaling Ruby, from development environments to search algorithms, it’s easy to fall back on assumptions, most often and dangerously someone else’s assumptions. Watching my daughter’s inner scientist emerge has been a good reminder for me.

I now assert, and have proven, that even New York City snow is made of ice crystals and melts at room temperature.

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