A closed parachute has no value. You will die sitting in one. There is nothing like a closed parachute. The function of the parachute is to be open and save a human life.
In the same way, a closed mind has no value. Nothing goes in. It is rigid. It can't adapt, it has no flexibility. It refuses to see the other point of view.
Only when the mind is open, it learns, it grows. It gives life to the intellect. An open mind remains alive, constantly absorbing its surroundings. It is open to life. It feels life. It keeps life intact.
Minds are like parachutes.