Martin Heidegger’s Being and Time (1927) deals with this ubiquitous mode of knowingness. It’s a pity it provoked him into the adverse judgement that those whose thoughts are ‘they-thoughts’ have lapsed into ‘inauthentic being’. In fact, there is no clear boundary between, on the one extreme, the they-talk necessary for survival, and on the other, the abject existential capitulation to the unexamined life which is inauthenticity. The they-talk required to catch a bus, to work as part of a team, to be a successful farmer, or to be a pleasant companion on a journey, is pretty extensive. ‘Gassing’ encompasses the bonhomie, camaraderie, the kindness of the decent person who wants to make us feel at home. At a more profound level, ‘they-talk’ is an expression of one’s membership of an epistemic community, itself a condition of keeping one’s grip on a responsible life. Hence the necessity of being something of a ‘ditto head’.