Even incomplete physics by Newton has allowed humanity to reach Mars and beyond. Even a dissatisfied Einstein's theory of special and general relativity has exploded into mind altering technologies and information beyond imagination of our ancestors.
Imagine humanity when even better and perhaps complete understanding of physics arrives.
Even an incomplete understanding of yoga and meditation has led millions of people to end or at least limit suffering in their lives. Numerous credible studies support better health, better psyche and better life for the practitioners.
Imagine you when even better and perhaps complete understanding arrives.
Why does incomplete understanding still produce results?
Because it is just incomplete not wrong. It is still an understanding.