ИСТИНА

To understand, at a mathematically serious level, what Douglas–Hoback–Mei–Nissim actually achieved in Formalization of QFT: not a vague symbolic imitation of field theory, but a machine-checked formal construction of the free massive bosonic Euclidean field in four dimensions, together with a proof of the Glimm–Jaffe / Osterwalder–Schrader-type axioms.