Because Zerofive has stated that he thinks the guy is a experienced player, so imo from his info he has a understanding of the game.. Obv not any hands played together etc.
U have bet £23 he makes it £48, screams strength to me, what's he bluffing with? If he has a 78/56 them sort of hands, he can call and re evaluate, bare ace, same thing, the 86 he might just call, or he can raise therefore u have Ur customer, I think he has either 75 or 55 or 86, therefore if he is drawing make him pay, and if he has a hand then it's going in anyway. Don't think on this board he is gonna bluff, if he is bluffing what's he trying to make you fold on this texture? I would just be thinking what he trying to think and lean more towards strength.
And secondly, if there is a chance he is semi bluffing, or weak aces etc, I actually think by playing it this way, u can get him to call u real light, as, if u had AA or AK/AQ or some other strong hand, many players would expect u to flat, this way u disguise your hand and get paid if he wants to be a hero.
If I was playing a fruitcake (someone like me), then yeah by all means flat and let them set fire to there money.
I also like to use those 2 words "ALL IN" whilst playing poker frequently.