Implied odds consider future poker bets. Consider the flush draw scenario. Since you have a 19.1% chance of hitting the flush on the turn, then in theory you can call up to 19.1% of the amount of money you would expect to win in a showdown. You cannot know how much you will win in future rounds of betting; you can only guess using your best estimates.
EXAMPLE “You simply don’t have the implied odds to call with suited connectors against tight players.”