Venture is defined as a risky undertaking. But in the following sentence:
"Lin averaged 14.6 points and 6.2 assists in 35 games (25 starts) for the Knicks last season. His aim is to improve his statistics every year, but he wouldn't venture to guess how good they could get."
why is the word "venture" used? What does it mean to say that a person who is guessing something is taking a risk?