I love how the First Life argument is presented in this video:
AUTHOR
Christen Bouffard
Christen in an instructional designer, Google Certified Apps for Education Trainer, and has worked at eCampus for 15 years. She values inquiry and ingenuity as tools for remaining an effective lifelong learner, and is most excited when engaged in discovering novel answers to unique problems.
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A simple visual object lesson in over-compressing JEPGs.
There is a surprising range of information available there ranging from beginner to even some advanced topics
Lots of math resources to be found on YouTube