I copied the text below from another forum. I don't understand how we can use "could" for a specific possibility in the past. We can just use "could" for general possibility in the past. Can you please explain?
"I found it could be a solution.
The finding is in the past, but the existence of the potential solution is in the present and future, as well as the past."Tara2 I found it could be a solution. ~ I found that it had the potential to be a solution. The sentence is saying that maybe "it" [ was/is/will be ] a solution (to some problem, presumably).
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Tara2I found it could be a solution.
~ I found that it had the potential to be a solution.
The sentence is saying that maybe "it" [ was/is/will be ] a solution (to some problem, presumably).
The potential to be a solution does not go away until someone proves either that "it" is not a solution or that "it" really is a solution. "c