Final answer:
It is true that one should avoid using jargon in writing when the intended audience is not familiar with the technical terms, as it may hinder understanding.
Step-by-step explanation:
The statement 'You should be careful about using jargon in your writing, whether euphemistic or scientific' is True. Using specific terms or jargon can make your writing difficult to understand for non-experts, as it requires specialized knowledge that the reader may not have. Thus, to ensure clarity and accessibility, it's important to adapt your language to your intended audience. For instance, if the target readers are not familiar with the technical language of a particular field, using plain language is essential to convey the message effectively.
Even when the target audience is specialized, the use of euphemistic language can obscure meaning and should generally be avoided to maintain directness and precision in communication.