We love you, too, Olivia, Bye!
If you’re not convinced by this, try it out. Use the diagram from the push-based reactivity section and try out the dirty algorithm in any order you like. You can even try out the difference between depth-first and breadth-first versions of the algorithm — it’ll change the order of the nodes you visit, but you’ll still visit all of them exactly once. ↩︎
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As we mentioned, sticking the device as close to the middle of the room is helpful for getting the best performance. That means you’ll be looking at it a lot, so design considerations matter. Most purifiers are cylindrical towers with fan vents up top. Units meant for larger rooms are not small, weighing between 12 and 20 pounds and reaching two feet tall (or in the case of the Dyson Purifier Cool, three and a half feet). Some, like Coway’s Airmega IconS, take on more furniture-like designs to blend in. Others, like Dyson's, are conspicuously designed to stand out.