SpaceX is only 12 years old now. Between now and 2040, the company's lifespan will have tripled. If we have linear improvement in technology, as opposed to logarithmic, then we should have a significant base on Mars, perhaps with thousands or tens of thousands of people.

Just as we could have rode into the sunset, along came the Internet, and it tripled the significance of the PC.

After I won the Oscar, my salary doubled, my friends tripled, my children became more popular at school, my butcher made a pass at me, and my maid hit me up for a raise.

The number of kids affected by obesity has tripled since 1980, and this can be traced in large part to lack of exercise and a healthy diet.

Just as we could have rode into the sunset along came the Internet and it tripled the significance of the PC.

After I won the Oscar my salary doubled my friends tripled my children became more popular at school my butcher made a pass at me and my maid hit me up for a raise.

The number of kids affected by obesity has tripled since 1980 and this can be traced in large part to lack of exercise and a healthy diet.