For more than 100 years, inventors have struggled to find ways to improve on the humble light switch. Compared with much of today’s fiddly technology, it is reliable, intuitive and immediate. It never runs out of batteries, requests a reset or needs an operating-system update.
100多年來，發明家很難改進看似平常的照明開關。與當今許多精度要求高的技術相比，照明開關可靠、直觀而且即時響應。它從來不會耗盡電池、需要重啓或者升級操作系統。
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