Would you play the same way against a person who is playing pool for the first time v. a 700 Fargo player? For instance, a safe against a player who is playing for the first time only requires (a little) distance between the cue ball and object ball, where a safe against a 700 Fargo player is probably going to require hiding the cue ball. Another example: while playing 9-ball you have a tough shot on the 8-ball. If you are playing someone who can't make a ball, you can go ahead and take the tough shot, if you miss you will still probably have a 90% chance of winning the rack. Against a 700 Fargo player, if you miss the tough shot, you will probably lose 70% of the time, and as a result you might decide to play a safe to increase your chances of winning.
Against both the beginner and the 700 Fargo player, you shouldn't be just playing the table, rather you always should be considering your opponent's response.