"I wouldn't be surprised" =
spec·u·la·tion (spky-lshn)n.1. a. Contemplation or consideration of a subject; meditation.
b. A conclusion, opinion, or theory reached by conjecture.
c. Reasoning based on inconclusive evidence; conjecture or supposition.
2. a. Engagement in risky business transactions on the chance of quick or considerable profit.
b. A commercial or financial transaction involving speculation.