This is a video of Youtuber JK Brickworks, who clearly owns multiple of every color of every LEGO piece that has ever existed (and has them all neatly organized), building a continuous marble run that expands on his previous marble run system ‘to include an elevator, so it can run continuously, and an alternator module, which routes incoming balls in alternating directions.’ It really is beautiful in its simplicity. Not unlike myself. If it were also 75% penis by total mass we could pass as twins.

Keep going for the video (turn on captions for some BONUS build commentary) but skip to 5:27 if you just want to see the thing running.