Reality, like the river, is a flow, which only seems to be composed of discrete drops when we try – and fail comprehensively – to catch it in the net of language: the bits that we do catch, the drops from the net, are an artefact of our process of investigation. No net, no drops. Similarly modern physics tells us that the entities that we discover when we probe the subatomic world are shaped by the process we use to investigate it – famously so, in the case of particles and waves.