hey, mr. poker author
If you’re planning on writing a poker book anytime soon, please correct your habit of referring to "strong" and "weak" players. It’s a lazy shorthand for something you could be expressing more distinctly. Are you referring to an aggressive / passive player? Or a tight / loose player? A winning / losing player? A fresh / seasoned player?
For the most part, I think most authors / writers are referring to the passive / agressive axis. At the same time, don’t confuse a pushover with someone who simply plays too many hands. The cards held by an extremely loose player may frequently be poor, but that doesn’t mean that he’s a better or worse player.
And, when you look across the table and see a 15% VP$IP limping in, that doesn’t mean that he won’t fold to a raise. Whether or not he does won’t make him weak or strong, just playing a different balance (perhaps poorly chosen) of poker.