What's Possible
If we look back through history and catalogue the long list of things 'experts' declared impossible, we'd be left with very few of the conveniences and technological innovations we enjoy today. Just because the precise method to accomplish this or manufacture that hasn't yet been devised, it has no bearing on what will happen in the future. If innovators believed that the status quo was the limit of possibility, the world wouldn't have experienced the inexorable technological march forward it has in the last 200 years. Same goes for what's possible in our own lives.
No limits.