Paranoia_1’s review published on Letterboxd:
Outdated by nearly 6 decades, but as an artistic rendering of science for its time and an appreciation for the love of science for us today, this is a masterpiece.
The watercolor, childish, and sketchy look of the animation simultaneously contrasts and complements the articulate explanation of the history and working of our world and the questions that'll haunt us 'til the end of humanity.
I love it even when it has its boring parts. Educational films never cease to amaze me!