Cai Mingjie

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Cai Mingjie (蔡明杰, born 1952) is a Singaporean taxicab driver and former biology researcher, known for his blog, A Singapore Taxi Driver's Diary.[1] He is described variously as "Singapore's most educated taxi driver" and "the only taxi driver with a Ph.D.".[2]


Cai was born in China. He received his Ph.D. in molecular biology from Stanford University in 1990, and worked for 16 years as a researcher at the Agency for Science, Technology and Research's Institute of Molecular and Cell Biology.[3] In May 2008, he was one of the first few Principal Investigators of the institute to be laid off. After several failed job applications, he chose to become a taxi driver in November 2008.[4][5] With the SG$77/day rent for his Toyota Crown, he said in September 2009 that his take-home pay comes out to between $30 and $50 per day.[6]

Cai began blogging about his experiences as a taxi driver, acquiring a large following of fans and even offers of employment.[6] In April 2010, he published a compilation of stories about his taxi driving.[7]

Selected publications[edit]

  • Cai, Mingjie; Davis, Ronald W. (May 1990), "Yeast centromere binding protein CBF1, of the helix-loop-helix protein family, is required for chromosome stability and methionine prototrophy", Cell 61 (3): 437–446, doi:10.1016/0092-8674(90)90525-J, PMID 2185892 
  • Cai, Mingjie, Diary of a taxi driver : true stories from Singapore's most educated cabdriver, Singapore: Aktive Learning, ISBN 978-981-08-5020-3 

See also[edit]


  1. ^ Seah, Chiang-nee (2009-08-29), "Driven to driving a taxi despite having a PhD", The Star (Malaysia), retrieved 2010-07-16 
  2. ^ Loh, Larry (2010-02-12), "The diary of Singapore's most educated taxi driver moves from web to print", CNNGo, retrieved 2010-07-16 
  3. ^ Gunasingham, Amresh (2009-08-19), "S'pore's most highly educated taxi-driver", The Straits Times, retrieved 2010-07-16 
  4. ^ "From researcher to taxi driver", The Straits Times, 2009-08-19, retrieved 2010-07-16 
  5. ^ "史丹福博士星洲揸的士 (Stanford Ph.D. drives taxi in Singapore)", Oriental Daily News, 2009-08-20, retrieved 2010-07-16 
  6. ^ a b Vembu, Venkatesan (2009-09-08), "PhD scholar from Stanford turns cabbie", Daily News and Analysis, retrieved 2010-07-16 
  7. ^ Yap, Stephanie (2010-04-08), "Diary of a taxi driver: True stories from Singapore's most educated taxi driver hits the shelves", The Straits Times, retrieved 2010-07-16 

External links[edit]