The contentment might be like temperature in an annealing system or experimentation/forgetting tunable in an artificial system. When we're content, nothing has

The contentment might be like temperature in an annealing system or experimentation/forgetting tunable in an artificial system. When we're content, nothing has to be changed, right? The trouble is, our "contentment sensor" has been evolved a long time ago for a different environment and is probably hard to train being so ancient and we do not know how to do it... Of course this is another "just so" explanation. There's not enough science on contentment and discontent related to intellectual performance. Currently I found this: https://www.ncbi.nlm.nih.gov/m/pubmed/6846034/ https://www.ncbi.nlm.nih.gov/m/pubmed/6846034/