It's only fitting that the decade closes with one last debate dividing the internet.
Now there's the question of which way this person is facing on this swing. Toward the camera or the building?
What seems obvious to some looks like the complete opposite to others.
Some people decided to illustrate their point.
In the end, the top bar gives it away. When he reaches the top of his highest swing, you can see his legs go up in front of the bar. If he was swinging the other way, the bar would be seen in front of his legs.
Plenty of trends from the 2010s will be going away, but the internet arguing over a visual brainteaser almost certainly won't be one of them. Looking forward to the next time-wasting illusion in a few weeks.