In the year 1787, upon seeing all of the evidence of the African in Egypt, Count Constantine De Volney wrote, "Just think that this race of Black men, today our slave and the object of our scorn, is the very race to which we owe our arts, sciences, and even our speech."
I have tried this for months, but cutting off not 25%, as article suggested, but 90%, and it works. Because when you constraint (or challenge) yourself to just 10%, you only focus on signal, and eliminate noise. And once the signal expands, the productivity amplifies.