Listen to the Summary of Taiichi Ohno's Taiichi Ohno's Workplace Management in 20 minutes. Please note: This is a summary & not the original book. The question then becomes, How long should it look for the lines to be the same length. or How long should it look for the line to be longer. This is not something that we can judge by sight alone, and we need to arrange the two lines next to each other for comparison...