Preparing an expert requires balancing—on one hand you must give them everything they need to properly assist with creating and telling your client’s story, as well as prepare an unbiased and informative report—while on the other, minimizing any damage that may arise from discovery. Rules vary by jurisdiction, and your experts may not be familiar with the laws in a particular venue. Thus, what feels like an open and frank email discussion may become a problem. Attorney Brian Weinthal notes:
We cannot silo them. […] If you are not maximizing your time with an expert, to explain to them their role, you are just letting the best opportunity to sell a persuasive part of your case go by. I see people spend tons of time with lay witnesses and go through this cursory analysis with the expert thinking, well, you are an expert, so you should be able to just deliver what it is you are going to deliver persuasively. It cannot work like that. You have to include them as if you are preparing a lay witness. It is the same kind of theory.
However, if your expert is unaware of the rules, they may make some innocent mistakes. Expert Pete Fowler gained a powerful lesson through one of his early missteps:
I had sent a client a two-page memo saying for us to do our work, you need to send us all these documents. It would have cost the client $10,000 to send us all these documents for a relatively small case. [… The client] called my boss and said, "Who is Pete Fowler?” My boss said, “He is a bright young kid who came to work with me. He is killing it.” The lawyer said, “Fire him now! If this case goes to trial and my client loses and I have not sent you every one of those documents, I am going to get sued for malpractice.” I realized that was a good piece of information. Now when my clients say do not put anything in writing, we understand and train all of our staff what they mean is do not put anything stupid in writing.