Alan Weiss writes on his blog:
Just this morning, an IT consultant complained that I was unfair castigating IT people for not being customer-oriented, and he prided himself on being a “level three” service provider, or some such thing. Right in his letter of complaint, he was being obscure. He was speaking his language, not mine, but expecting me to adapt to him. Is level three good or bad? Who cares?
Consultants Need To Be Multilingual – Alan Weiss, PhD