Intuition: Jacobian

Use of Jacobian: mapping between two state spaces. Each element of the Jacobian matrix describes how much a change in one original state space parameter affects the parameters in the new state space.

Presenting CAD pieces to other people

Helps to turn off shadow and reflection, both found in display options.

CAD: mating cylindrical and rectangular pieces

Use the planar components of the cylindrical (and spherical) pieces to mate to the rectangular components.

Fixing pointers to renamed files in Solidworks

Use the 'Replace Component' command.

Source: http://help.solidworks.com/2012/English/SolidWorks/pdmworks/Fixing_Renaming_Errors.htm?id=fa740114198b43d681b773612498713e

Safely removing Arduino from Mac

"I’ve probably removed Arduinos from Macs and PCs a thousand times and it never did any harm.

The “remove safely” option is mainly interesting for hard drives etc., because a hard drive should always get the chance to write buffered data to the physical disk before it gets unplugged."

source: https://forums.pragprog.com/forums/129/topics/10216