I always use the Green-Tao Theorem[0] as my go-to example that very understandable problems are still being solved in modern maths research. [0] https://en.wik

I always use the Green-Tao Theorem[0] as my go-to example that very understandable problems are still being solved in modern maths research. [0] https://en.wikipedia.org/wiki/Green%E2%80%93Tao_theorem https://en.wikipedia.org/wiki/Green%E2%80%93Tao_theorem