All you are saying is that you have been been working on trivial software systems and haven't been exposed to anything particularly large scale or complex so fa

All you are saying is that you have been been working on trivial software systems and haven't been exposed to anything particularly large scale or complex so far in your career. Also you must be confusing basic arithmetic (1+1=2) with mathematics in general. Go read some papers on deep learning architectures or learn about the Fourier Transform then come back and tell us how shallow and simple it is. Mathematics requires the most sophisticated and deep thinking that the human species is capable of. Very few humans have the raw intellectual capacity required for being a productive mathematician.