This one size fits all approach is wrong. It is not about the size, but of quality. If you are able to hire all A-star employees then small size makes sense. Bu

This one size fits all approach is wrong. It is not about the size, but of quality. If you are able to hire all A-star employees then small size makes sense. But the reality is very different. You cannot get all A-star employees from the start, and you are also racing against time. So you try to balance between time, size and quality. If you are lucky, you will get second A-star senior engineer. Otherwise you have to hire two junior A-star engineers instead of one senior engineer both being mentored by a senior engineer. Depending on what your team configuration is, the way of communication changes. With senior engineers the communication is minimal but with junior team member configuration the communication increases. Similarly, the cost structure(implicit and explicit) also differs between these two configuration. So suggesting a single prescription is not viable. The reality is very different and needs to be looked at on a case by case basis.