You should realize how poor this argument is. First, many glaciers are still in retreat from the last major ice age. There is a kind of momentum to glacier ret

You should realize how poor this argument is. First, many glaciers are still in retreat from the last major ice age. There is a kind of momentum to glacier retreat and glacier advance, and that momentum plays out over centuries. Second, in some cases there are other factors at play. For example, soot from coal/hydrocarbon combustion settling on glaciers and ice sheets reduces albedo and increases melt rates. Third, and most importantly, glacial advance/retreat is not just a global phenomen but also a local one. Just as weather is not climate so too individual glacial change is not climate. One glacier retreating does not prove the climate is getting warmer any more than one glacier advancing (of which there are many) would prove the climate was getting colder. So you can't point to one example and say "ahah! incontrevertible PROOF!" any more than you can tell an anecdote in support of some medical theory and assume that you've proven anything either.