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Have you seen someone involved in such a practice? Ask them why they did it, and you might likely get a similar response. For example, someone who's just new to gambling might tell you they never knew what to do,
so they just decided to shake things up. An experienced gambler may not be practicing this again, but I bet some of them did it in the past, probably for the same reason we are discussing. Like for me, when I did it, I didn't just understand anything much about sports betting, so what I did then was without any idea of the right steps, and I was just 100% submissive to luck.
Shake things up in a foolish manner such that the gambler will just expect any result from their bet? That's not really an impressive gambling habit that a gambler should put on because gambling is already risky, such that a gambler cannot accurately predict the right outcome of their bet. That is why they must make sure to at least apply good gambling knowledge or strategy so that they know that they stand a better chance of being lucky than gambling in a foolhardy way that makes them lose more often.