They are "rational choice" people who work with models and Numbers and write arid, impenetrable jargon.

他们是一群有“理性选择”的人，成天和数字、模型打交道，并用干巴巴的、不可理喻的术语写作。

youdao

Their jargon is impenetrable to an outsider.

他们的行话外人听不懂。

《牛津词典》

It also illustrates how every industry has its own jargon, rich in technical meaning to insiders, but often impenetrable to outsiders.

它还说明了每个行业自己的行话对业内人士如何拥有丰富的技术含义，但对门外汉却十分费解。

youdao

The UK's big energy suppliers are trying to digest the impenetrable jargon that cloaks the government's announcement about the contents of its forthcoming Energy Bill.

BBC: Energy Bill: Will companies now build new power plants?