Although rarely admitted or communicated, in scientific research it's quite common to change the originally formulated question once insurmountable obstacles have made an answer difficult or impossible. After having invested so much in research, the scientist is wondering, which which other questions he could ask by using the material he has collected/created.
So my question is: is there literature on this phenomena, that problematizes the pattern and possible (systematic) impacts profoundly? Any hints from philosophy, science theory, science history or any other discipline are highly appreciated.