My son was/is like that. He is 3 years old & has been this way since he was younger. I have also heard that it is a sign of great intelligence because they want to explore how & why things work & what not. All kids are different & I am praying my baby isn't the same way or I will go nuts lol Trust me, I have been through it all. I wish I could say it get's easier, but right now at 3 years old it is finally starting to get a little easier. He can understand consequences now so I tell him he either stops or he goes to time-out. He realizes he doesnt like time-out so must of the time, he stops. My mom had 6 kids & she tells me she never had a kid like him. She says he has such determination & he is on a mission... shes not sure what kinda mission but hes on a mission & determined to get there.