A funnel is super practical for filling liquids because it is wide open at the top and therefore makes it easy to fill the liquid and then guide it through a narrow opening into the actual container without loss. This provides good support during the filling process without the risk of losing some of the liquid by spilling it and there is also less risk of scalding yourself with hot liquid. However, care must also be taken with funnels: filling too quickly can lead to backflow and overflow, which is associated with loss. The same applies if you cannot predict when the target container is full or whether all the liquid in the funnel will still fit. The funnel is a support but not an extension. People who offer us their help should also be seen as such: as support and not as someone who takes my responsibility away from me.
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