Robust decision making is like choosing what game to play with your friends when it's raining outside. You have to make a decision that will work well even if things change or unexpected things happen.
For example, if you decide to play soccer and it starts pouring rain even harder, your game might not work out so well because the ball will be slippery and hard to control.
So instead, you might decide to play a game that can be done inside, like charades or board games. These games will work well even if it keeps raining hard.
In the same way, when people make important decisions, they want to make sure that their decision will work out well, even if unexpected things happen. They want a decision that can work in different situations and under different conditions.
Robust decision making helps people make choices that will work well even if things change or unexpected things happen. It's like having a backup plan that will give you the best chance of success no matter what might come up.