Why only some information keeps in your brain and how can the brain say if it’s important or not?

Question: Why only some information keeps in your brain and how can the brain say if it’s important or not?
- Keywords:
  brain,
  psychology
Asked by anon-228762 to Sophie, Jolel, Emily, Amber, Alex on 15 Nov 2019.
- Jolel Miah answered on 15 Nov 2019:
  
  This is a great question, i like your thinking. I use to think about this all the time and I have learnt that emotion plays a huge, the more emotion is processed for a particular event the more we are likely to remember it.

Question: Why only some information keeps in your brain and how can the brain say if it’s important or not?