time required to build 90% use-cases = time required for fix rest 10% corner use-cases. I have spent plenty of hours to improve that last mile of 10%. Later re

time required to build 90% use-cases = time required for fix rest 10% corner use-cases. I have spent plenty of hours to improve that last mile of 10%. Later realized shipping first 80/90% and then fix 10% based on feedback.