I'm 100% logical/analytical with machines and 100% emotional/manipulative with people.

It's not in your interests to be manipulative. People know when they are being manipulated, or they figure it out later and relationship rapidly goes out the window. You don't need to be manipulative with people to get what you want.

A realist here, I'm manipulative only with my foes. My friends and love interests I value them tremendously and I don't resort to such measures when dealing with them.