To trick the Cyclops. He knew that when he blinded the Cyclops that he would call his brothers for help. But since he yelled, "Nobody has blinded me!" they didn't come to help him so Odysseus and his men could sneak past the blinded Cyclops.
4, it explains the definition very well. i do not think it is to broud either
The value of being a risk taker is that you really know who you are because you are confident enough that whatever your abilities are and whatever your skills are, are suitable to sail towards that risk. Taking a risk is highly needed most especially in business because we really do not know what lies ahead.