Not scotch as it doesn't age outside the barrel./QUOTE]
Many including myself will disagree with this, sure it will not mature like it is in the cask but it will change over long periods of time certainly over decades and perhaps not for the best.
Some call it 'bottle ageing' and others the 'old bottle effect' last year I tried a 10yo whisky bottled 2013 and the same whisky bottled around 1970 and it was clearly 'aged'.
The guys that worked at the distillery were blabbing on about the quality of their casks and quality control in their modern plant and how the older whisky would not be as good as the new version they looked quite insulted when I disagreed the older whisky was clearly better and it was tried by a few who all said they preferred it.
Anyway apart from that if you buy a bottle of whisky today and compare it side by side with a bottle bought in 10-20 years time it will certainly be different as the casks, malt, blender*, weather conditions etc will all have an effect.
*Even a single malt is blended with casks from the same distillery unless it's a single cask which will have it's own character.