The theory, hypothesis, framework, or background knowledge held by an investigator can strongly influence what is observed.

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• Julius Caesar

  Roman Dictator

  Thursday, Jan 01, 1970
  

• John Keats

  Poet

  Saturday, Oct 31, 1795
  Friday, Feb 23, 1821

• Vincent Van Gogh

  Painter

  Wednesday, Mar 30, 1853
  Tuesday, Jul 29, 1890

• Pope Francis

  Thursday, Dec 17, 1936
  

• Lucy Larcom

  Poet

  Friday, Mar 05, 1824
  Monday, Apr 17, 1893

• Stephen Hawking

  Physicist

  Thursday, Jan 08, 1942
  

• Isaac Newton

  Physicist

  Sunday, Jan 04, 1643
  Monday, Mar 31, 1727

• Marcus Tullius Cicero

  Philosopher

  
  

• Nelson Mandela

  Former President Of South Africa

  Thursday, Jul 18, 1918
  Thursday, Dec 05, 2013

• George Orwell

  Novelist

  Thursday, Jun 25, 1903
  Saturday, Jan 21, 1950

• Dwight D. Eisenhower

  34Th U.s. President

  Tuesday, Oct 14, 1890
  Friday, Mar 28, 1969

• Paulo Coelho

  Lyricist

  Sunday, Aug 24, 1947
  

• Will Rogers

  Actor

  Tuesday, Nov 04, 1879
  Thursday, Aug 15, 1935

• Theodore Roosevelt

  26Th U.s. President

  Wednesday, Oct 27, 1858
  Monday, Jan 06, 1919

• Albert Camus

  Author

  Friday, Nov 07, 1913
  Monday, Jan 04, 1960