How correlated are efficiency and value?

Does efficiency inherently maximize value?

Do middle men add or remove value from an economy?

• For example, if transportation was better, and we didn’t need so many taxi services, would that be an increase or decrease in value created (certainly more efficient to remove middle men, but maybe efficiency and value are not always correlated?)

References

“A capitalist system aims for the efficient allocation of capital, and indeed, workers have a better shot at seeing median wages increase when money is being put to its most productive use” (Mihir A. Desai, Capitalism the Apple Way vs. Capitalism the Google Way)