if you say so... the fact that you have, as well as others im sure, have been asking multiple times, over, lets say a course of 5 years, where others have not been asked at all, shows its NOT random, period random would mean of 120-130 million users, would each at some point get asked at least ONCE over a 5 year period.
This is where someone comes and knocks on your door, calls you on the phone or walks up to you on the street and asks you to participate in a study.
cause you have been asked multiple times, shows this method is not what valve uses. if a person gets asked more then twice in a 5 year period.. means either valve is picking people some how, or there is another reason.
in your own analogy, if the same survey group keeps coming do your door, thats NOT random, no more then it is with your study on alcohol, and only going to bars or pubs'
The second method, what you are asking for, is a full voluntary opt-in method where the individual clicks a button in settings to send data every month
i didnt say that, or ask that, at all.. IF the survey is volentary and random, then at some point, every one should be asked at least once in a 5 year period. which is not the case... what you are suggesting would mean if a person could do the survey when they want to, any time they want to, and as much as they wanted to, that that would mess up the results more so then the person being selected 4 times over 5 years.
either way.,.. the steam survey should NOT be used as the be all tell all of what hardware is out there and being used, unless , each and every user, is asked at least once in a 5 year period, as there is alot of hardware out there that isnt been polled and added to this survey.
now, IF valve changed it so that each person can go in, and take the survey manually once a year, and only once a year, that that would be alot more accurate, then how it is done now...
at this point.. im just got to say this :
agree to disagree