you certainly can criticize pg's arguments and not get downvoted (i've done it in the past), but any ad hominems will, and should, quickly be downvoted. if you

you certainly can criticize pg's arguments and not get downvoted (i've done it in the past), but any ad hominems will, and should, quickly be downvoted. if you think you have some real knowledge to drop, make a considered criticism instead of a snide remark.