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Rheinland-Pfalz: Störung im Mobilfunknetz von 1&1 - noch immer Kunden betroffen
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No, it absolutely is hard, and those are bad comparisons. Growing up you interact with bread and cars, and you build a preference based on what you're taught and what you experience. If I go into a new store and see a dozen types of bread I've never eaten, I can still make inferences about their taste, texture etc. This is not the case with Linux distributions - if I've never used Linux before, I literally don't know what the hell I'm doing.
And it's absolutely unrealistic to expect your average person to try a few out. They won't be able to decide on technical grounds, and they'll have to use the distribution for some time to build enough experience for a preference. Going back to your car example, it's like suggesting people buy a few cars and decide which one they like (since they don't have the experience to make judgements based on short test drives) - you're asking them to invest a lot of time for something they don't really need or want.
You seem to be fundamentally misunderstanding my point, as I didn't mention the average person's intelligence in any way. All I'm saying is that minimizing the effort required to really try multiple distributions is a terrible way of introducing people to Linux. It will only lead to frustration and rejection. Choosing your bread doesn't require investing dozens of hours.