Puzzling Questions about Kant's Critique of Pure Reason

In My Humble Opinion
1
  1. In a nutshell what does Kant say we experience/perceive when we see an external object and what goes in our mind/with our senses during this observation ? 2. Where does Kant in some interpretations contradict himself and
  2. What does modern science say about Kant’s interpretation of how the observing mind works. Is it flat-out wrong? Did he get something right?
    Please don’t avoid Kantian terminology in your answers. I welcom it!