Double-flush (two buttons, one for mini-flush and one for regular flush) is a great idea, but whenever I use such a toilet, I think hard about the symbolics behind its UI design — does the large button signify the release of a larger amount of water, or does is signify the more “preferred” and frequent mode of flushing (with less water)?
And can somebody teach me how to use the toilets with the motion-activated flush? About 80% of the time, it either doesn’t flush when it has to, or it flushes some four times before I actually leave the stall. I must be doing something wrong.




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Two friends of mine pointed out that some countries have got it figured out. In Australia, for example, it’s clear what each button is: one shows a higher water line than the one next to it. So you clearly know which one is giving more water. The buttons are the same size.