Keep a transformed normal perpendicular to the transformed surface
Normalizing a direction does not repair the wrong transformation.
Read the lesson →THE CREATIVE FIELDBOOK / SNS MEDIA TECH
Practical lessons
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Read a lot acceptance curve without certifying the accepted lot
Keep a sampling plan’s operating behavior separate from a delivered batch’s quality claim.
Read the lesson →Read process capability with its centering and stability conditions
The same spread can sit very differently inside the approved specification.
Read the lesson →Separate a path parameter from distance traveled
Evenly spaced parameter values need not produce evenly spaced motion.
Read the lesson →Calculate a feasible sequence when jobs share machines
A dependency-valid timetable can still reserve the same machine twice.
Read the lesson →Distinguish a circular resource wait from an ordinary backlog
Two unfinished jobs may each hold what the other needs next.
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