ສຽງ​ທີ່​ແບ່ງປັນ

The science we learn in grade school is a collection of certainties about the natural world — the earth goes around the sun, DNA carries the information of an organism, and so on. Only when you start to learn the practice of science do you realize that each of these “facts” was hard won through a succession of logical inferences based upon many observations or experiments.