The disadvantage can be eliminated if the life line is weak and breaks under the load of a falling person.
Use modeling with smart little creatures. Find out how they can help us.
Let us draw a chain – a life line, let the creatures be weak and just release their hands at a certain load, thereby breaking the chain. In parallel, let us arrange another chain composed of strong creatures that in no case will release their hands.
This is what we have:
It won’t get you anywhere yet, the life line working conditions will not change. It seems that the functions of the two chains are different. The weak creatures should be first to operate, they hold the worker’s weight up to a certain limit and then release their hands and break the chain. Only after that do the strong creatures come into play.
It may look as follows: