The vanishing point in this painting is marked by a pin-hole; this held a piece of string which helped to draw all the lines converging on this point (the so-called ‘orthogonals’). Works of this kind were called ‘perspectives’ in the seventeenth century; it is possible to imagine original viewers examining them from exactly the right position (with one eye) to get the full three-dimensional effect. It is clear even to the naked eye that the architecture was painted first and the figures added over the top of a complete interior. This does not mean that the subject is irrelevant: the story of the ‘Woman taken in Adultery’ involves Christ writing with his finger in the dust of the floor, an action which ‘brings in’ the architecture.