What does adam smith claim is the single greatest factor in increasing productivity?

The Wealth of Nations Summary and Analysis of Book I. Adam Smith begins by stating that the greatest improvements in the productive power of labor lie in the division of labor. Even in the production of very simple products, division of labor always increases productivity exponentially.

elizabeth loftus conducted a study to observe the reliability of eyewitnesses during the 1970s. their baseline was to define how accurate are the recollections of eyewitnesses.

her studies do not support the use of eyewitness. loftus mentions in her work that we are not required to recall some experiences, meaning that rarely an individual eyewitness testimony is trustworthy. a good example is presented in her work, where all individuals watched a video and were than asked "about how fast were the cars going when they hit/smash? ". the testimonies changed based on the word she used to make the question (hit or smash), proving the fragility.

answer; /// the correct answer is (belongingness needs; good luck