The flows of digital information and images that we’re discussing in the context of surveillance are everywhere magnifying that sense of liquidity, which also, according to some, has the effect of ‘cooling’ memories. The ‘hot’ memories that might shape and direct cultural development in properly ethical ways are replaced by the coolness of paying attention to the incoming email, the status update and the revised forecast, as they flit across our consciousness. Even in the realm of surveillance, as your ‘plunge and dive’ metaphor reminds us, things are in constant flux. There, too, consumer statuses alter with each new bit of transactional information and your chances of being detained for further questioning at the airport vary with traffic levels and the most recent trail of traces you’ve left in your wake.