如果把时间倒回几十年前，或者说仅仅是十年前，一个人出门确实挺难的。路程耗时长、买票麻烦，订房不划算，到了陌生地方两眼一抹黑。但现在不一样了。
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Let’s illustrate the concept of modules by an example. Assume there’s a requirement for a rich-client application to perform an auto-update process. This requirement during the design process will become the application’s responsibility. If we assign it to an Auto-Updater Module, it will mean that fulfillment of this responsibility lies solely with this module. Not-modular approaches often lead to scattering responsibility among so-called “modules” like “model”, “database”, “infrastructure”, “domain”. But in the modular approach, if it’s decided that auto-update is not needed anymore, we should be able to get rid of this responsibility by deleting just one module (and its wiring to other modules), without the need for the shotgun surgery throughout layers.
Since every person is different, there’s no one best ergonomic keyboard layout. The standard QWERTY layout is what most people are used to. The Dvorak, Colemak and Workman layouts rearrange the board to put the more commonly used letters closer to the home-key position. All three are intended to minimize your finger movements. That may indeed feel more comfortable and less fatiguing, but people used to the QWERTY layout will likely need to relearn how to type.
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