Read more on this subject: Space Travel and Exploration
News Story Source: https://www.nextbigfuture.com, brian wang
Elon cited the examples of the Egyptians forgetting how to build Pyramids and the Romans forgetting how to build their massive aqueduct systems.
It takes a lot of hard work by many people and good plans to achieve and sustain great technological advancement.
Elon makes the case that we can choose and work hard to achieve a better future where we have sustainable energy technology, clean transportation and space capabilities for colonization of the moon, Mars and near space.