Succinct History of Computer Systems

Problems of moving from 1 programming language to another

• Why Can’t Facebook Stop Using PHP
• Why hasn’t Facebook migrated away from PHP
• Quora’s Performance Challenges
  • http://www.quora.com/Quora-Infrastructure/Is-the-Quora-team-considering-adopting-Scala-Why
  • http://www.quora.com/Python-programming-language-1/Why-has-the-Python-community-taken-so-long-to-migrate-from-Python2-to-Python3