Something that really gets me down with SE is the fact that a lot of people just don't read the body text.
I posted this question: How is the number of stops of benefit provided by VR determined?
and three people have since voted to close it because they believe it is a duplicate of this question:
The question I posted had an original title of of 'How to work out extra stop' which in my mind suggests that the stop value has been worked out already and if anyone had read the text they would had realised that I am specifically asking about people calculating extra stop when turning on VR etc. I hear it all the time in lens reviews.
I have been working as a professional photographer for three years and am confident in my understand of a stop but I can never work out how people accurately work out how stop is increased by using something external. I now realise that they don't, in fact it seems they just hold the camera steady and take pictures adjusting the shutter speed until it is sharp. This does answer my question.
I'm sure what I posted is a valid new question but because people haven't read the text, it is about to be closed which is a shame because it really hasn't done any harm in my opinion.