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Anti bias

 Does your GPS include any or all the cliffs? Why you neve rheard of the cliff is probbaly the person who found out about it is no longer in the earshot distance. The unknown unknown.

How do you counter a model  where home prices only go up.

Machine learning by training on all the available data with movmeents both in the positive and negative direction can take care of showing you what you might not like.

When looking at a price and volume matrix, we might be operating only on the positive quadrant. But imaginr your rectangle floating up and down and even front and back. Think of water as the economy or market, adding another dimension. If many customers are leaving you, then your boat goes back or left. If you have to provide discounts for sales, your boat gets heavier.

Your customers are not the passengers. your custoemrs are the other boats that you help stay afloat with your services.

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