Fermentation vs. Carbonation Times

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inturnldemize

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So I was thinking about the whole brewing process and there is one thing that popped into my head and I figured, who better to answer this question than the experts on this here forum!. Here's my logic:

Fermentation of beer usually takes 1 week or 2 weeks (in general - some are longer). After that, fermentation is done and no more CO2 is being released (or very little)

When you carbonate, you are basically fermenting but in the bottle. You add the priming sugar and the yeast 'wakes up' and starts eating the 'food' you provided it. This now carbonates the beer by releasing CO2 and also adds a minute amount of alcohol.

Technically both steps are doing the same thing, so my question is: why does it take beer 1-2 weeks to fully ferment but it takes 3-4+ weeks to do the same thing in the bottle?
 
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