Lubricating nature of workable concrete is the most important nature. Let's see how we can achieve higher strengths without affecting it's workability.
Back in 2014 when IIT-M did a prototype of the GFRG buildings for the first time in India improvising the age old gypsum reinforcement methodology, it was pretty good leap for mankind.
In layman terms, this is how I explain to my juniors and college grads on design mixes.
The truth about sound insulated buildings.