Donald Trump has asserted that, "Science gets lots of things wrong." Actually, that statement doesn't go nearly far enough. If it's any good at all, science needs to get everything wrong. That's because the scientific method is a method of successive approximations. It works like this:
1. Observers notice a set of facts. (OBSERVATION)
2. Theorists try to come up with an explanation that covers all observed facts. (THEORY)
3. Scientists versed in the facts use the theory to make predictions that will either support or not support the theory. (PREDICTION)
4. Several scientists, well-versed in the field but WORKING INDEPENDENTLY, run experiments to see if the predictions hold up in the real world. (EXPERIMENT)
5. Results of the experiments are published for other independent scientists to review, and test for themselves. (PEER REVIEW)
6. Experimental data are then considered as new observations, and the cycle begins anew.
Please note that when we talk about "facts" in science, we are talking about experimental data, NOT about conclusions! Many, many observations have supported the conclusion that germs cause diseases, for example. The diseases, and the existence of the germs are facts. They can be observed by any reasonably equipped researcher. But the conclusion that the diseases are caused by the germs is a theory, albeit a very well-established one.
Some diseases, such as allergies, are not caused by germs. Does this mean that Germ Theory of Disease is WRONG? No. It just means it is incomplete. Similarly, all scientific theories are incomplete. That's how science works. There's always more to learn. That's the great advantage of science over superstition. Some superstitions may be right, such as the superstition that chicken soup can alleviate common illnesses. Believing that superstition may help you treat your child's cold, but you won't learn anything from it that you didn't already know. Science always gets things at least a little bit wrong, but it leaves room for further investigation. Over the course of many cycles of investigation, we can learn a lot, and get much nearer to the truth than by blindly following popular superstitions.
I am a registered Republican, and will not be voting for either Trump or Cruz. I won't vote for a senator who is willing to hold the entire United States hostage financially to get his way, as Cruz did, and who forced us to cut our military budget by 50% while fighting a war on two fronts, no matter who he is running against. (Remember the Sequester?) Can't you see him threatening to veto every bill until Congress passes the laws he wants? And then DOING IT? Nor will I vote for a bigot who is unwilling to renounce the KKK until his feet are repeatedly held to the fire over it, a rabble-rouser who incites his followers to violence, and who openly espouses torture and the bombing of civilians as an acceptable strategy of war. Both are considered war crimes by every country on earth, except for ISIS and North Korea. Listen to his rhetoric and then ask yourself, "Do I really want this guy's finger on the nuclear button? Not under any circumstances! I greatly fear that either he or Cruz would be the literal end of the United States as a nation.
To be even-handed, I also will not be voting for either Sanders or Clinton. I don't fear that either of them will destroy our country deliberately, but I cannot morally support a candidate who is currently under federal investigation for breaches of security amounting to treason-- breaches so serious that they would land even a sitting President in the slammer for life, at minimum, if convicted. And who was placed under investigation before she became a candidate. Nor can I in good conscience vote for an avowed Socialist who, in the face of a nuclear North Korea, world-wide economic melt-down, ISIS and Boco Haram, global epidemics, and global warming, thinks that all our problems are caused by there being too many greedy, rich Americans! (I read that on his OWN web site!) Who thinks we can get out of our huge financial debt crisis by borrowing and spending even more money that we have no way to repay.
Tough times are coming, people. Be prepared.