Right now, though, we are living through a truly unique period in human history. (newscientist.com)
It often makes me a bit nostalgic of that very unique period in my life living with and treating breast cancer. (mindbodygreen.com)
Because many people will be investing for periods of 50 years or more (for example starting at 35 years old and dying at 85), all available history is only providing just 2 or 3 unique periods of similar length to back - test against. (mindfullyinvesting.com)