Every gambler, no matter if he/she is professional or recreational, uses certain criteria in order to decide what he/she should bet.
There is a plethora of scientific and non scientific criteria, but let's begin with those which are not based on mathematics, statistics or physics.
Each individual considers different numbers as "lucky" according their perception, their belief doesn't necessary reflects reality.
Someone might consider number 19 as lucky because his birthday is on the particular day of the month, while another person may consider "lucky" number 7 because she is 7 years married.
Such beliefs are unorthodox because they are not related directly with the events of the game in any way.
I don't wish to analyze further about the unorthodox criteria because there are much more to be analyzed about the scientific criterias, so let's move on.
There is probability of every event and deviation from its respective probability, therefore a gambler might choose to back probability against deviation or to go with the deviation as long as it lasts.
In both cases what determines the winners is not which side they decide to be but the range of the variance, the degree of the deviation.
In my opinion there are not "bad" or "good" bets, there is only good time for everything!
In other words timing is everything, it's about the factor when which determines what to bet.
Those who back probability, call me "cold" sections, wish that the deviation won't last for long.
From the other hand, those who go with the flow are wishing that what they've already observed as "hot" to last a bit longer.
We don't know beforehand the degree of the deviation with absolute certainty.
Let's say I want to bet an EC which has already slept for 4 times in a row with a progression which can go up to 4 additional losses in a row, by the way this kind of bet is very simplistic and almost ancient, by doing so I'm becoming half-smart because I'm saving from possible losses but also I'm missing possible wins, thus I'm not improving my overall odds for becoming winner in the long term.
As most of you well know net profit comes from total wins - total losses, of course there are individual who prefer to live in denial and fool themselves that they are doing something significant.
Personally speaking, I'm not one of them and I'm very glad!
Now let's examine the principle of selecting "hot" sections, in order a specific selection to be hot must has already appeared more than its probability, by the time I'm starting to follow the particular bet section there are three possible directions which deviation could go;
1) Raise the degree of the deviant selection (Lead)
2) Maintain the degree of the deviant selection (Follow)
3) Decrease the degree of the deviant selection (Get out of the way)
If I was backing a "hot" number, what would be the worst of the above 3 scenarios?
Of course the third one, BUT even with the worst scenario defeat is not certain.
I'm already hearing you ask "How come?"
I'm going to give you an example which is very possible, let's say I'm betting a number which has already appeared 3 times within 37 spins and that number is hitting once during the next 37 spins, so it's frequency has been reduced from 3/37 to 1/37 and became an "average" number, yet again I didn't lose from that downturn.
That number could be stable in the next 37 cycle and repeating its frequency of 3/37, could also decrease to 2,1 or none hits, or even increase to 4,5 or even 6 hits within the next cycle of results.
There are no certainties but tendencies to follow, these tendencies could go either way and if the deviation is relatively mild a progression could succeed.
By the way, the progression is nothing in comparison with the selection, selection was and always will be superior to progressions.
Just consider progression as a mean to an end, a gun which if you are not able to use it properly could turn against you...imagine a progression as your bids for a property, this property begins from a low affordable price but when the owner realizes how badly you want to "buy" that property, he/she increases its cost more and more without being increased its value, that's why eventually you pay the price...
Let's talk about the betting criteria based on physics, the so called advantage gamblers attempt to predict what's more possible from physics perspective.
By using illegal devices and/or calculations in their mind are trying to calculate ball's and wheel's speed, scattering effect according the ball's size and composition and the shallowness of the wheel's pockets.
Well, under near perfect conditions and with excellent minds or very technologically advanced devices it's possible.
It's also possible to encounter a purple unicorn under your bed!:-D
Not to mention about the security measures for such illegal devices...
Just think, a single second of delay in calculations could result in exactly the opposite sector of the one presumably predicted, just the tiniest of destractions could cause an error and afterall the only thing a casino has to do is not allowing bets after the release of the ball, or even calling "no more bets soon enough".
If you think that's the best way to win in gambling, good luck!
Finally, I'd like to emphasize about the mistaken approach in the bet selection regarding the proximity of table's & wheel's layouts.
Believe me I've seen more results than you could ever imagine and let's say that when number 13 has been developed in a steady hot number, it's neighbour, number 14 on the table could be as cold as ice, means 0 freaking hits when 13 has 8 hits.
The exact same goes to the wheel's layout, number 3 hit 12 times, while 35 none!
Number 6 appeared 10 times while 34 appeared 0 times!
I've seen such examples so MANY times I could not even recall all of them by heart, I'm sure that if you check your own records for such incidents you would confirm what I've already said.
So forget about grouping numbers according their proximity in the wheel and table layout, numbers should not been considered as sections, sectors, reds, evens, lows...etc
Those sections have been artificially made by the casinos, and all of them can become hot or not because of each spun number and not vice versa.
To understand it better, just do the following, check and you will NEVER find a single EC which contains ALL hot numbers, the hot numbers belong in more than one sections, the best odds/payouts you can get is by betting straight up numbers.
1 unit on EC and betting for 37 consecutive spins = 18 units average return
1 unit on dozen/column and betting for 37 consecutive spins = 24 units average return
1 unit on sixline and betting for 37 consecutive spins = 30 units average return
1 unit on corner and betting for 37 consecutive spins = 32 units average return
1 unit on street and betting for 37 consecutive spins = 33 units average return
1 unit on split and betting for 37 consecutive spins = 34 units average return
1 unit on straight up and betting for 37 consecutive spins = 35 units average return
Where's that good ol' common sense...?!