I beg to differ. What is food I beg to differ. What is food? Roaches? Twinkies? Georgia mud? What it means could be defeat, if one has an eating disorder, or a source of satiation or nothing at all, because you acquire and eat it with no significant thought or effort. As for what it means to others , that too is open to subjective meaning. None of whic is to say that food could not be measure objectively, though the very definitions of food and measurement would have to be viewed subjectively. I am looking for you arguments against meaning being subjective, and I am not seeing any thing convincing. Meaning without subjectivity seems like taste without tongues. You can measure the saltiness, sweetness, bitterness etc, but you cannot judge the tastiness,be cause determining tastyness requires a tongue attached to a mind, and any given mind might have an entirely different subjective view of said tastiness. Even the affair had to be couched in terms specific to the individual, some people have affairs and think little of it, and in some social circumstances the same actions would not be an affair at all. What could be more subjective than that? I will keep looking, I hope to find a compelling case against existentialism,but I haven’t seen one here yet.