[memracom]

Actually, they often are. But Wikipedia articles are written by dozens or even hundreds of people who spent a significant part of their lives researching the topic. Individually none of those people can match that Britannica expert's experience, but collectively they dwarf him.

[_delirium]

Britannica's expert model also risks some pretty biased and incomplete articles, depending on the expert chosen. There's a relationship between being prominent in a field and being willing and able to write a comprehensive, neutral overview of the field, but it's not quite the same thing, and some top researchers are very bad at the latter.