There must be a perception-over-time element to this. Fresh from the container, there's probably not much difference, but the size of the container, whether it'

There must be a perception-over-time element to this. Fresh from the container, there's probably not much difference, but the size of the container, whether it's re-closable, how well it conducts heat, how fast the individual drinks, etc must have an affect on overall perception of quality/tastiness. I'm wondering at what point quality is "sampled." There's the first sip ... and then the last. Maybe overall perception is tied more strongly to the last sip?