In my view, DS indeed occurs due to dealer laziness. I also, however, believe that a highly experienced Dealer can initiate his drop within a very few slots of a target drop number. And I further believe a highly experienced Dealer can spin the wheel at a 'familiar' speed, and as well release the ball at a 'familiar' speed, TO HIM/HER. As a result of combining his 'familiarity' with these three variables, the highly experienced Dealer may AT TIMES excercise sector-control on the wheel. Not ever single time, but enough to cheat randomness.
An analogy is dice control at the craps table.
Take a look at the Wizard's discussion over at wizardofodds.com relative to dice control. I don't question that there are virtually no 'professional' roulette or dice players. I do question those who categorically state that dice control is impossible. And I also question those who state that no such thing as intentional Dealer 'control' in the game of Roulette may exist. I think our thread-starter here has gone a long way to dispel this latter presumption. IMO.
I just found this interesting article and experiment on Spin control. I for one don't believe that any dealer can control the ball to the degree required to hit a specific number or section. If it were really possible to do this, then the game of roulette as we know it simply could not exist. And that for me is a very simple proof showing that spin control is all in the dealers head.
I started in the casino business at a major London casino, and the standard spin was very slow, only about 4 or 5 times around the wheel, and also with the wheel just turning at a fairly leisurely speed. The idea was to get as many spins in a day as possible. We never reversed the spin either and it made not a whit of difference in anyone's ability to predict the number. I was surprised when I started work at another casino and discovered the dealers whacking the ball around at a hundred miles an hour!
Secondly I would like to point out the magnitude of the claimed experiment by "croupier". It is stated that he performed over 20,000 spins in total. If we assume that a spin and logging of the resulting number takes about one minute to perform, then 20,000 spins would obviously take about 20,000 minutes. 20,000 minutes is over 333 hours! Working solidly, and without a break, for 8 hours at a time - and with no days off, it would therefore take over 41 days to complete this experiment! Even if we assume only 30 seconds per spin it would still take over 20 days. Did the game remain dead and management really put up with this for several weeks at a time? I don't think so. I call humbug, I think someone is 'aving a laugh!
In addition, actually your results are not as impressive as they would appear. Remember that when one of your 19 numbers is hit you are paid 35 chips, but you also lose the other 18 chips,(assuming you place a chip on each of the numbers in your section) so your profit is only 17 chips. BUT when you lose, you will lose all 19 chips. I think your "hit" percentage would have to be a lot higher for you to be a winner.
Was in a casino some years back, nobody playing a roulette table, ball lands on zero, dealer then says, "I'm now going to spin 007, because it has been a few years since I have done that". Second spin, zero, third spin, misses the 7 by ONE pocket, yes ONE pocket. Older Huxley wheel, from reading this thread. some of you need to bet bigger on the roulette tables, then you will see what really happens, then you wake up and smell the coffee.