4 ideas
In a bare room with two high windows, blind Hamm sits in a wheelchair he cannot leave while his servant Clov, who cannot sit, fetches, pushes and reports; Hamm's legless parents Nagg and Nell live in dustbins. Clov repeatedly threatens to leave, and the play ends with him dressed for departure, standing motionless at the door while Hamm covers his face with a bloodstained handkerchief. Whether he ever goes is never shown.
Hamm cannot stand and Clov cannot sit, so each supplies exactly what the other lacks. Hamm controls the food and the combination to the cupboard, and Clov has the legs. Because their disabilities complement each other so precisely, neither can leave without destroying himself, and the bond survives on need long after any affection has gone.
The outside world reaches Hamm, and the audience, only through Clov climbing a ladder with a telescope and announcing 'zero' and 'corpsed'. Whoever holds the only instrument of seeing controls what counts as reality, and the report can never be checked. Clov's sudden claim to have spotted a small boy outside shows how a single uncheckable report can reshape everyone's sense of whether life continues.
The play opens with 'Finished, it's finished, nearly finished' and then keeps putting the end off through daily routines: painkiller requests, Hamm's chronicle told in instalments, and checks on the window. The play treats habit as the thing that keeps the end from arriving.