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Find. Measure. Practise.
No account. Your numbers do not leave this machine.
Find
Bottleneck Finder
Twenty questions. You leave with a likely constraint, a free move for this week, and the usual wrong move to avoid.
Measure
Throughput Converter
Paste last month's lines. See throughput, investment, and operating expense. Judge the next decision with those three.
Practise
Find the weak link
Walk one job, name what everything waits on, squeeze it for a week, read the money.