BentMikey said:
I don't think this bit is correct. I don't recall anyone saying more than primary is a way of playing the odds, of reducing the chances of the driver behind doing something stupid.
That'll still leave the occasional idiot driver who will do something stupid, and that brings us to the second thing wrong with the above. Primary doesn't leave you in a worse position, it means you now have the space to correct for the idiot's mistake.
The actual word i used is
can put you in a worse position...not will.
The thing ive learned in this forum is you can make a statement and it will be read as gospel by some less experienced cyclists.
The only point i'm making is to less experienced cyclists, that primary
can come with it's own dangers. I think for a less experienced cyclists safety, its a point worth making.
As always, nothing is absolute, the myriad of possibilites that can happen in any position in the road means that you cannot absolutely, beyond doubt, control what another driver does.
My experience was taking primary on a country road when i sensed a car coming from behind, a car oncoming...and we're all going to meet at the same point. Pity the driver didnt agree and pushed through at 30-40 mph'ish, within 2 inches of me.
Some will say you didnt take the correct position then, but short of stopping, measuring the width of a car with a tape measure, then measuring the distance from...you get the point

You can still make the right judgement, but it can still go wrong
sometimes.
Yes, being in primary gives you the space on the left for avoidance...but in my case, by the time i'd even had time to think, due to the cars speed and proximity to me, it was past me anyway

Avoidance space is only any good if you've the time to use it.
Dont get me wrong, primary should be encouraged for ones safety....i would never dispute that, but for the sake of less experienced cyclists wishing to develop their skills...it does
occasionally bring you closer to conflict.