Hi Folks - Back to the wine question. If you take two identical glasses, with identical quantities of wine and water, then you can transfer as much as you like between the two, backwards and forwards, all day if you want to. As long as the levels of both glasses remain identical then so will the ratio of their contents, i.e. they will always be mirror images of each other. (Mohill - it doesn't make any difference whether you stir the contents or not!)
e.g. Glass A 90% + 10%, Glass B 10% + 90%
or... Glass A 37% + 63%, Glass B 63% + 37%, etc
There is no exception to this rule - if it's not in Glass A then it must be in Glass B (so Sarumite was correct!)
This principle works equally well with 2 buckets of different coloured sand (but don't mix the sand with the wine or you will get in a dreadful mess. . .)
Cheers! ja