Quantum Quack said:
actually Rosa in referring to structure provided I was more concerned with that which is external, like roads, buildings, technology, people ( location of ) etc etc.
A shopping centre for example has much structure which we as people have to navigate and conform to, however Improvisation allows us to excersise our freewill whilst conforming in part to that structure.
In this case, we're talking about what is called "schemes" and "scripts" in semantic studies. Cognitive semantics, as far as I know, says that we have a kind of abstract images of how certain common processes go: like we have a script called "a visit to the dentist", or another one called "having dinner at a restaurant" etc.
When in a certain situation, we act in accordance with the script we have acquired over the years.
Of course, not each real life situation fits into the idealized script -- this is where we must be flexible and creative, act out our "free will". Say that I go to the bank, follow my script "going to the bank to withdraw money" -- but then a robbery happens. What do I do? Do I act according to my script and proceed with my transactions? No, I don't. I do what the robber with the gun tells me. This is a more extreme example; but we see ourselves acting on preset scripts and adjusting them to the present situation all the time:
"I remebered something I could tell QQ. But I am on the bus, I can't go online and post him. I'll take my notepad and write the thought down, so that I don't forget it, and post it later when I come home."
Maybe you would care to explain your beautiful big and bold and very pink statement "Presentation"
Yah, it is about presentation, alright (that's why I was editing it so much!).

I see now that by "Is freewill , in the main an act of improvisation?" you may not have meant the same thing I did.
I was thinking that once it comes to improvisation, one of the main principles is to make a !presentation!. The way we present ourselves is what others get to see, our effectivity depends on how we present ourselves.
If someone chooses a screen name like "TotalSlut" -- well, would you like to correspond with them? Or if someone, in their posts, keeps on saying "Oh, but what do I know, never mind me" -- it does not invite to further communication. It is bad presentation.
And in the air of this, I was thinking that free will is also a matter of presentation: if someone presents oneself as having free will, others will think that this person has free will -- and free will is something desirable in our society.
I mean, one may think that one has free will, but unless one acts on it and shows it -- it is hard to think that this person has free will.
To successfully present oneself as having free will, to be an *I*, quite an amount of creativity and flexibility is needed -- to act accordingly in each situation.
And to act accordingly in each situation is basically improvisation on given scripts, don't you think?