system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why is the sucking force behind a fan not felt as strongly as the blowing force infront of it?
gpt
Air is pulled into the fan from various angles, not all of which are in contact with your skin, whereas air being blown out of the fan is more concentrated in a certain pattern (i.e the radius of the fan blades). 

The air being pulled in also takes the path of least resistance (going around your hand) rather than directly contacting your hand, while the air being blown out is directed in a particular path (by air being displaced behind it) where the air has no choice but to contact your hand before going around it.