How do planes fly?

You ask: How plane fly?

Caveman throw spear — spear fall. Plane heavy like many mammoth — big jumbo plane weigh same as sixty mammoth — but plane no fall. Why? Wing. Engine push plane forward, very fast, wind rush over wing. Wing tilted and curved so it shove air down. Air no like being shoved — air push back up on wing, same as when Caveman push canoe pole down into river, river push Caveman up. Also air rushing over curved wing top move fast, press soft. Air under wing press hard. Hard press below, soft press above — wing get squeezed up. Push enough air down, push beat plane weight, plane climb into sky. No speed, no lift — that why plane run hard on ground first, like hunter sprint before leap. Cave wisdom: plane not float like cloud. Plane throw air down, so air throw plane up.