I think what
Boone is saying is it absolutely possible guys will improve, but it probably happens less often than we might think. I honestly don't know if I agree or disagree with that because I'd want to actually look at some statistical data to either support or contradict it. However, to me, it feels somewhat right.
I think what you can say is most players will improve year over year as they get more experience. That's just life, you get better at things the more you do them, until you lose the physical/mental ability to do them as well as you could.
The question really is how often a player take a huge leap forward. So, they go from somebody who you would expect just moderate success from based on their initial production to being a pro-bowl or all-pro level. Or, in the case of Reeves, he couldn't even make the 53 on ST, and then he was selected to the pro-bowl as a STer. I think those are big leaps.
The question is, how often do they happen? I think we can all agree they do happen. But I think what
Boone is suggesting is they don't happen very often. And absent a detailed data study, I'd tend to agree if for no other reason Reeves is the only obvious player I can think of that improved that dramatically.
Another way of saying it might be bad could get to ok, ok can get to good, good can get to great, but going from bad to great doesn't happen as often.
As it relates to Lane, I think he's great at Punt Returns. He's probably bad at WR. Could he go from Bad to Ok? I'd say probably. Would an OK receiver make an NFL roster? Probably not, unless they were great at something else. ** If somebody were to argue Lane is already "ok" at WR, I don't know that I would argue. But he's not going to get on the field much this year. If they keep 7, he's probably #7 as WR, but #1 at PR, therefore he earns a jersey and will be active on gamedays.