Boolean algebra was introduced by George Boole in his first book The Mathematical Analysis of Logic (1847), but digital technology on human-made devices was developed more than a hundred years later. Likewise, devices that utilize fractal functions were developed hundreds of years after mathematicians put forward mathematical theories about fractals.
Then, why were mathematicians in the past not mentioned by name when industry 4.0 and/or 5.0 society began to be developed?
So, hurry you, mathematicians to participate in advancing industry 4.0 or 5.0 society. And, the only way to take a fast track is to use the principles of the Harmony in Gradation. Because, Harmony in Gradation is the spirit of Mathematics in Industry 4.0, society 5.0 and others our future. Believe me!