Some people like to live in the moment, or in the now. That is possible a more psychological way of interpreting a moment. But physically seen, does this contain a time lap? So is it actually possible to live in the now? Or is the Planck time (5.39 × 10 −44 s) the time lap which defines 'now'?
Or when it is 17:00 h, does that moment has a time lap? Perhaps mathematically it could have a now, because 17:00 seems to be very exact. But in practice, regarding special relativity, a clock can't indicate the time precisely 17:00 because that would also imply that there is an infinite number of decimals which due to all motions can't stay zero. Or can they?