It's said about brain that, "use it or lose it" — now, question being, do you think if person plays brainless gambling games such as slots, dice for major part of his/her daily routine, will it make him/her dull?
Edit: "brainless" as in playing gambling games that does not require using brain, I thought it was clear especially given examples.
Some questions are funny, and this is a typical example of it given above regarding gamblers who play slot games. Because the truth of the fact is that we have got 2 distinctive sets of people (i.e the smart and dull people), and as such, no matter how long a dull individual plays a game that requires the use of his/her brain, such individual can never be smart. And likewise the same thing goes to a smart person who can never be dull, simply because he/she chose to play slot games. Because also, slot games also requires the use of Brain work to be able to gamble effectively and responsibly.