Easy to add but hard to remove
In rapid development projects, how easy and interesting it is to add new functionality is key. In this environment, exciting, new, terser languages are more productive. It helps to keep developers motivated and happier which leads to more code. In low latency environment, adding code is not the hard problem. Understanding the problem, the behaviour of the system, and what you program is really doing is the hard program. This leads to removing code, layers and complexity are more important and harder to achieve. To remove something you gain from static analysis, a minimum of side effects and clear relationships. You also benefit from a clear understanding of what the code is really doing all the way down to the CPU level. Without this you cannot remove things which don't need to be done and your code will be needlessly slower. A simple example is the amount of garbage you are producing. One way to slow down a program is to produce lots of garbage. T...