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Psychology is concerned with the what and how of mental life, not the why.
The only thing I can do is to be honest about my uncertainty.
In the age of big data, the mathematical principles of data structures and algorithms have become more critical than ever.
"Books are the keys to imagination, and imagination is the key to the future."
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.