This is something I wish SO had.
On some SO questions, they clearly get quite long and figuring out the different attempts can be tricky. Many people can be wrong, old bugs can be fixed in a framework (this has happened so many times to me esp when googling an error message), people can talk about tangential issues, and discursive questions can really eat up a lot of time esp if the sol'n is simple.
HOWEVER, often the fix is embedded in this. This phenomena is compounded by popular questions becoming more popular via google search. Would it make sense to have a summary version at the top? Say, it takes 3 minutes to read and a couple of minutes to think about and a question gets 500 views, that would be saving several hours of usable time. Perhaps, a summary is only valid after an answer has been accepted?