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You make contracts with specific clauses. Any work done for you, you must have a contract, where you stipulate who is responsible for what. Contracting an insurance is nothing else than throwing the dead cat into another yard. If you say to the worker, ok we will not contract any 3rd party insurance but I will pay you a bit more, are you agree with that? If they say yes, is THEIR responsibility not yours. But stipulate that in a contract.
Read UCC - Universal Commercial Code. The whole world function based on UCC.
Prediction markets have an obvious utility in measuring peoples perceptions and expectations. This is valuable information in any market it is applied to. It is not gambling in the pure sense but instead a process of understanding better how people understand the world around them and the changes that are occurring in it. While gambling is for the most part a losers game with the house generally profiting from peoples weaknesses, prediction markets are potentially useful mechanisms in creating more informed and open free markets.
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