Look at some of Facebook's early code: https://gist.github.com/philfreo/7257723 https://gist.github.com/philfreo/7257723 https://gist.github.com/nikcub/383340

Look at some of Facebook's early code: https://gist.github.com/philfreo/7257723 https://gist.github.com/philfreo/7257723 https://gist.github.com/nikcub/3833406 https://gist.github.com/nikcub/3833406 There are plenty of people in this industry who would have told you this code wasn't fit for production. People frequently overestimate both what's needed to build commercially-viable solutions and how easy it becomes to recruit the right people to improve (or reimplement) poorly-architected solutions if they become popular.