Stages Of Thoughts

1) Idea Strikes

2) Brain Makes a choice

3) Assimilates the Thought

4) Ponders on Feasibility

5) Conflict of ideas

6) Tries to Settle with one idea

7) Assesses the pros and cons

8) Works for it

9) The idea becomes a tangible thought

10) The cycle of idea towards a complete thought completes.

Reference - Tarot (Sword Suit)

That's why, Tarot is scientific.