There's a level you can get to on your own and then there's a level you can get to with two or more. ET illustrates with the Belgian horse that can pull 7,000lbs alone but two of them can pull 15,000lbs. What's more, if two of them together are trained from the start they can pull 25,000lbs. If what you want to accomplish is 25,000 lbs away then you need to get over you and plug into the power of two.
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