Following this question. I have just run into this question at SO. It seems to be fitting perfectly to the Programmers, it is a nearly perfect example of an off-topic question at SO and yet, it can't be migrated, because it is too old.
How and why came with the idea of questions being to old for migration? What is the reason behind this? If some questions fits badly here and fits perfectly there, what value do we have from blocking their migration only because of their age?
Note: This question is not a duplicate of this one. I don't want to know, why questions too old for a migration, are migrated even so. I want to know, what is the idea in marking question as too old for migration, at all.