Question about the Empiricists?

I have some questions about the Empiricists.





If sensation is fundamental and essential to our knowledge of the world, how does this problematize their view of our knowledge of the external world? Of the Self? Does the distinction between Primary and Secondary Qualities help?








What is the problem of Induction?


What is the problem of Causation?





What is the new Riddle of Induction raised by Nelson Goodman?





Should Empiricists accept any a priori truths? Should They?








Thanks!
Question about the Empiricists?
All experience is founded upon sensation. Knowledge is not acquired in any other manner. This %26quot;problematizes%26quot; things only for those who hold to mechanical causes wherein there is such a thing as absolutes and totally objective data. Knowledge is intensely inter-subjective and highly dependent on the function of language and interpretation. Those who hold that there is a problem to induction play up the participation of the Subject in that venture. The essential problem of causation is its illusory nature, entirely dependent on perspective. Hume based his inference on the principle of tautology, circular reasoning. Essentially what logicians desire, is that which they cannot have, objective verification of inferences and predictions. Wittgenstein effectively did this in with his Prolegomena. Goodman is just more gobbledy-****. The structure of language and understanding necessitates the acceptance of a priori truths, but also forces them to objective questioning and rejection as they prove inapplicable or not germain to questions under consideration.