a technique used in rock climbing
sometimes a hold is not very good
and holding onto it can be difficult.
The dead point is used when a hold is so difficult
to hold onto that any motion by the climber
will result in them slipping off
the hold. The climber moves dynamically
and at the highest point in their trajectory
when their upward force exactly
balances gravity they are effectively
weight-less. At this moment they are also
momentarily stationary.
They can place their hands on the hold
and prepare for their weight to come onto
the hold. This is a very difficult
technique to master.