12
votes
4answers
560 views

Why are sinks always rounded?

I've noticed a trend recently that some sinks have a flat base, but they seem to be few and far between. Are there any reasons related to UX for why sinks have traditionally always been round?
16
votes
7answers
1k views

Why are AC adapters (wall warts) designed to block adjacent AC outlets?

The AC adapters for a lot of equipment seem to be specifically designed to block the AC outlets around it (this is in the US). Is this a safety feature to minimize the power to that outlet or just ...
8
votes
4answers
264 views

Is the middle power option 50% or 60%?

A friend of mine has a blender with 6 control selections: One off position, and five power settings in order of less to more power. Example below: A discussion has erupted over whether or not the ...