Time has shown that this Regan policy is nothing more then a scam to give the rich a Free Ride in society
The worst and most absolutely illogical form of world capitalism. Holds that if you give money to people who are already rich, it will be invested and slowly "trickle down" to the hands of those who need the money. Doesn't ever work, and has no logic at all. Practiced by rightards and Republicunts. Was responsible for the economic disaster that was the Great Depression.
For example, the wealthy might use the extra money to expand their businesses or buy more shares in the stock market, thus expanding the economy and providing more jobs for those in the middle and lower classes.
The wealthy might also spend the extra money on more goods and services, thus providing the middle and lower classes with more work.
Probably the most significant stream of money trickling down is from the extra money that the wealthy put in banks. Because there is more money in banks, there is more money for the middle and lower classes to borrow for buying houses and starting and expanding businesses.
Many liberals like to attack trickle down economics as an unfair benefit to the wealthy. Their mistake is that they ignore the idea of the "invisible hand" that is implicitly behind the idea for such an economic policy. Trickle down economics is good because it inevitably leads to more jobs and money for the middle and lower classes and to an expanding economy.