I hope you realize I am playing the devils advocate Yaro.
Premise : Dinos are extinct.
Observation 1. There are dino bones
Observation 2. dead dinos leave dino bones
Observation 3. No live Dinos have been observed
Conclusion: Dinos must be extinct.
Refutation: Since the Earth has not been simultaneously explored nor completely explored.
Observation 3 is inconclusive. Premise is based on a negative.
I did not say your premise was incorrect, I am saying it is based on a negative that you begin your premise with inconclusive evidence. Making the assumption that since no dinos are observed they are extinct. My whole point being that Science as well makes premises based on a negative, regardless of how accepted the premise may be. example:
Premise: fish need male and female genetic material to reproduce.
Observation 1. male and female genetic material makes for biodiversity
Observation 2. No fish has been observed that does not need a male and female to reproduce
Observation 3. Many fish that mate are male and female.
Conclusion: fish must need male and female genetic material to reproduce.
Refutation: Since every taxa of fish mating has not been observed premise is inconclusive.
(* as a side note. Observation 2 is incorrect. a species of self fertilizing hermphorditic fish does indeed exist.
who would of thunk it.