"Force Field Analysis" is like these...
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any deviation from pink noise patterns allows us to perform force-field analysis. also force field can be created byintroducing several nodes that would break out of pink noise pattern. for example, getting fewer more powerful nodes oscillate with less frequency.
when apple sells things in apple store the question of money is at the background. the actual transaction is invisible, it almost doesn't exist. it's even better if it can just be put in a phone (we have a positive association to it)