You are logical and analytical. You truly enjoy learning how things work, and you want to know every detail.
Complexity doesn't put you off; it thrills you. You like to delve deep into a subject, even if it takes years to master.
You are very realistic. You are neither unduly optimistic nor unduly pessimistic - you see risk clearly.
Some may think that you are too critical, but you are good at anticipating (and solving) problems before they become serious.