Investigators are able to interpret any Evidence that matches their specialism, even Evidence they find themselves. So if you investigate and turn up evidence that matches your own specialism, that's a lucky result: you get a free Clue!
Many thanks for your question; I will make sure to state this rule explicitly if I publish an update.
I hope you have fun with the game, and good luck!
Investigators can interpret Evidence that matches their specialism as often as they like. The once-per-day limit is only on investigation, i.e. rolling on the Investigation Table.
The limit is also not a strict rule. If you wish to play by electronic mail or instant message, I don't recommend following it.
Whenever Investigators wish to communicate with each other, they must use stamps. If you are using a method of communication that does not require stamps, please keep track of how many you would have remaining were you using stamps.
