I think your partly right... but keep this in mind... infrastructure projects can take years sometimes. But when cities/companies have budgets that are unused and must be spent by a certain time we watch amazing things happen lol. In my city we watched a 2 year Bridge project be finished in roughly 90 days because they had to spend the money by a certain time lol. I know my analogy is low level compared to working on the things you are talking about. But I can't help but think that Twitter was on manual autopilot... you would be amazed what motivated humans can do... I truly think the employee model of the future is not a set time of work hours. Example 9-5... 70% of the employees time is wasted passing time.. most people could finish a day's works in 2-4 hours if there was enough incentive, ie being able to go home when they are done their work. I totally think it will still take a long time to automate Twitter but might be alot faster than we think.