I have taught in the United States (2 years), China (3 years), and South Africa (2 years). Many of my students have obtained Phds in STEM courses at top Western Universities. My knowledge of mathematics is second to none. No other mathematics educator (whether professor, teacher or student) has my knowledge, ability or exceptional IQ (above 160). There is no such thing as a human who cannot do mathematics, only bad mathematics educators who cannot teach. When using well-formed concepts, any human can understand and master mathematics, and yes, enjoy it too! I show you the FLAWS in mainstream thinking.