This question may be subjective enough and complex enough that it is more appropriate as a real question to the meta, not to chat. Plus it's not about the simple mechanisms of the site.
I want to track how a certain kind of airspace was designated on US sectional charts over time (basically since 1945).
I want to ask something like this:
a) what is the earliest date we can find when marking "A" first appeared on US sectional charts? Specify geographic title of a chart that bore such a marking on this date.
b) what is the earliest date we can find when marking "B" first appeared instead of the previous marking "A" on US sectional charts? Specify geographic title of a chart that bore such a marking on this date.
And so on through about 7 parts.
After posting I'll post an answer stating the earliest dates I have at present.
One way for others to answer would be to copy my answer and edit it to reflect any refinement (earlier dates) they are able to provide. A later user could do the same for their answer. And on and so forth.
Obviously this site also allows anyone to edit a previous answer outright, but that might get messy in this particular case. (Imagine two users making an answer at the same time.)
I'll require that the geographic title of the relevant chart be included in the answer so we can keep track of what's what and it doesn't just turn into one great big mess.
Obviously w/ this sort of question the goal is to increase knowledge and not have someone hope that their particular answer will get the most "upvotes".
So, would that be kosher?
OR should I just ask each part as an individual unique question?