Deadguy
First Post
The Common Tongue is, as others have made clear, just a handwave to remove the impact of languages in play unless the DM needs it to be significant! That is, PCs will understand everything unless the adventure requires that some communication be confusing, when specialised skills are required.
I'll add that I went down a slightly different path for my own campaign. I've indicated that there are many thousands of tongues in the world (and PCs should just ask if they are interested in developing local language skills). But that there are also 4 other languages that for various reasons have achieved widespread usage - one a former Imperial tongue, one the language of a group of people who helped rebuild large areas of a devestated world, and two tongues used by traders who travel far and wide. Generally speaking if you can speak all 4, then you'll bump by in most parts of the world (well the cosmopolitan parts anyway - just don't be surprised if backwaters are confusing!).
I'll add that I went down a slightly different path for my own campaign. I've indicated that there are many thousands of tongues in the world (and PCs should just ask if they are interested in developing local language skills). But that there are also 4 other languages that for various reasons have achieved widespread usage - one a former Imperial tongue, one the language of a group of people who helped rebuild large areas of a devestated world, and two tongues used by traders who travel far and wide. Generally speaking if you can speak all 4, then you'll bump by in most parts of the world (well the cosmopolitan parts anyway - just don't be surprised if backwaters are confusing!).