Question: Have most humans seen non-Euclidean geometry?, Answer:Yes, Description of Euclidean geometry: Mathematical system attributed to Euclid, Fact1: Spherical geometry is a type of non-Euclidean geometry., Fact2: The Earth is a sphere., Fact3: Most humans live on Earth.
Step1: What shapes contribute to  non-Euclidean geometry?, Step2: Where do humans live?, Step3: What is the shape of #2?, Step4: is #3 part of #1?, Wikipedia page for step 1:  non-Euclidean geometry, Wikipedia page for step 2: Earth, Wikipedia page for step 3: Earth, Wikipedia page for step 4: , not_definitive_answer: False, incorrect_answer: False