Learning GD&T is just as important as learning trigonometry.
After spending 20 years designing advanced hardware, I have some unsolicited advice for new engineers. Although you may be a most innovative thinker and may be able to create fantastic widgets, understanding how your part will be manufactured is just as important (perhaps moreso) than that new idea. Even if 2D drawings go away, you will still need to communicate key dimensions for inspection and allowable tolerances for manufacturing.
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