In order to acquire and share a better understanding architectural changes, researchers face the challenge of modelling and representing events (cause and consequences) occurring in space and time, and for which assessments of doubts are vital. This contribution introduces a visualisation designed to facilitate reasoning tasks, in which a focus view on evidence about what hap-pens to artefact λ at time t is a complemented with a context view where succes-sive spatial configurations of neighbouring artefacts, durations of changes, and punctual events are correlated and tagged with uncertainty markers.