I've heard of it, but haven't looked into it in detail as Esperanto seemed good enough and is the most popular of the aux languages. I've played with Lojban, bu

I've heard of it, but haven't looked into it in detail as Esperanto seemed good enough and is the most popular of the aux languages. I've played with Lojban, but honestly think it is just too hard for a human to be good with. It and its successor have been around in some part for decades, and yet nobody can really speak it fluently (I've heard less than 10 people). I really like the idea...just not sure about the implementation.