Is the cycle of economy a pure coincidence? Reagan Bust - Bush Sr Bust - Clinton Boom - Bush Jr Bust?

Yeah, the unfair tax system has not helped our economy. That's a main reason I don't want McCain to win. He says "Obama would raise taxes." But, the tax change would would be a tax reform, and not a tax increase. This would make our economy stronger because rich people do save a lot of money. Also, they are 3% of the nation compared to the rest.