The students’answers ranged from 20g to 500g.
“It does not matter on the absolute weight. It depends on how long you hold it. If I hold it for a minute, it is OK. If I hold it for an hour, I will have an ache in my right arm. If I hold it for a day, you will have to call an ambulance. It is the exact same weight, but the longer I hold it, the heavier it becomes.
“If we carry our burdens all the time, sooner or later, we will not be able to carry on, the burden becoming increasingly heavier.