KuzyaTech takes apart some generic buttons and asks, “What can we learn from simple things?” I too do this analysis every time I tear something down or have to disassemble something for repair, or otherwise. It’s a fun learning process and you can imagine yourself in the shoes of the person who made the decision years ago, trying to imagine why they designed something the way they did. For instance in the second image below I assume the reason for the ‘redundant pairs’ as KuzyaTech calls them is in case the user was more prone to depress one end of the long button more than the other (for instance a child reaching up from below, or a heavy-handed relative who smashes the button from above) – this way at least one sure contact would be made.
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