If (false) may be useful

Can you be friend with this kind of dead code? In this particular subject my opinion is slightly different from the general. I can agree that in the ideal programming world there is no need to use dead code, but in reality there are situations when it's good to consider this solution as appropriate.

Secret behind 0.999... = 1

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Wikipedia: 0.999...

Searching a solution we often forget about the problem behind it. I'm familiar with the wrong focusing on 'how' instead on 'why', and what's more I've seen people doing the same mistakes as well. For example, let's just look at law regulations as synonym of complication paired with uncleanness. However, I'll drop that subject and introduce the similar problem occurring in maths. Do not expect any great proof, because I'll do that to explain it as simple as possible.