There is no definitive answer to this question, as the extent of rigging in blackjack machines is unknown. However, there are a number of factors that suggest that the machines may be rigged in some way.
First, it is well known that casinos often use unfair strategies to advantage themselves over players. For example, casinos may use software that tries to predict player behavior in order to generate favorable outcomes for the casino.
If blackjack machines were not rigged, then this type of player manipulation would not be possible.
Second, blackjack machine payout ratios have been found to be surprisingly different from casino to casino. For example, some casinos pay out 88% or more on blackjack hands while others only pay out 50%.
It is difficult to believe that this wide a range of payouts could be caused by random chance alone. It is more likely that the different payouts are the result of skillful manipulation by the casinos.
Finally, there is evidence that some blackjack machine operators are deliberately manipulating the playing environment in order to disadvantage players. For example, some machine operators will randomly change the stakes during play in an attempt to confuse and irritate players.
This type of manipulation would not be possible if the machines were not rigged.
