In most of the worst cases I have seen, the main reason was because of lack of experience or poor timing. (binaryoptionrobotinfo.com)
If you ever tried to split a bill with friends at dinner, you probably realized they're sort of lacking in math skills. (pearltrees.com)
But they also suggest that some of our taste knowledge may have been hidden, not by lack of interest, but by use of the wrong techniques. (sciencenews.org)