Quite often, people remark to me that I set unreasonable time estimates for work because I am somehow much better than anyone else. I strongly disagree with this statement. Both the qualitative assessment of my skills, and that this is an unreasonable timeframe.
There are several things that I am doing that I think that people are ignoring. One of them is not starting from zero, but starting already at high speed. But that isn't the major thing here. The major thing is that people fail to notice what I am giving those estimates very well defined things. You want to build an IoC container? It takes less than ten minutes to build a useful container. And I built an application on top of a container that wasn't much more complex than that.
That isn't a good IoC tool by any means, but it took very little time to build, and it works. If you click the link to see the container code, the container whose code you are reading is going to be involved in serving the code. It works and it fits to purpose.
That is a major thing to remember. A lot of the really useful concepts are trivially simple to build if what you need is a very simple. You can do that in a day.
And I include in this concepts such as OR/M, Aspect Orientation, IoC, Logging, Hot Code Swapping, Message Buses, Search Engines, Event Brokers and many other basic infrastructures.
The catch is that in a day, you get something that works, for the scenario that you need it for. If you want to take it to the next level, however, this requires a much higher degree of investment.
Coming back to the title of this post, you either do it in a day, or you dedicate three months for it.