Ceteris paribus, less efficient postal services do not have greater scale economies than more efficient ones.
Scale economies are correlated with more efficient postal service operations.
Scale economies certainly have no effect on efficiency.
Three men are sitting on a bench.
A teacher helps out a student in the computer lab
Work and budget
Four doctors wearing suits and ties look in the mobile bin.
The volleyball team is eating ice cream.
There is a Walgreens in the park.