Scientists are trying to make predictions about the future based on past experiences (inductive reasoning).

Philosophers aren't necessarily trying to do that.

You can't get to capital T truth via inductive reasoning like science uses. Just because the apple fell from the tree every single previous time, does not necessarily imply that it is going to fall down next time.

But if you are after other forms of reasoning its possible. 1+1 will always equal 2. Why? Because you (implicitly) specified the axioms before hand and they imply the result. Talking about capital T truth is possible in such a situation.

So its perfectly reasonable for philosophers to still be after capital T truth. They are doing different things and using different methods than scientists do.