I'm still a new pharmacist but I was proud to catch someone taking Diovan and lisinopril at the same time just glancing at their med list. Every day, I see little things that I know are wrong and I'm able to quickly correct the issue. An uneducated person might see an e-rx for metoprolol succinate BID, and just continue with it, but I would know to call and make sure this was changed to either QD or tartrate (another example that happened to me). It's always good to double check with the MD on a digoxin dose of 250 mcg for an elderly person to make sure they aren't being overdosed. Also, knowing what might raise someone's lithium levels suddenly and how to identify signs of toxicity is always helpful. Knowing what to give a child with a fever (and what to avoid, had a patient that grabbed baby aspirin for their 4 year old) and how to treat a cough in a child under 6 will make parents very grateful. These things may or may not be alerted to you by a computer algorithm, but would you rather an uneducated person just accept what the computer says or an educated person that knows a computer can't catch everything?
There are many little things that a pharmacist can help with, including over-the-counter. Sure, you might be able to look up each drug and have a ready list available for the key points, and then another list for disease states and therapies. Then, you might want another list for compounding. By now you should have several large stacks of paper, or several kilobytes of word documents that need to be sorted through. Now, you will want to be able to key in very quickly on the relevant information you need to answer a patient's yeast infection question, supplement question, constipation question, any question that could possibly be asked. A patient doesn't want to wait for you to sort through your massive amount of information for what they believe to be a quick and easy question. Did I forget to mention you will want to update your knowledge on these things regularly?
So, by now, you've learned a basic amount of information on every relevant topic in pharmacy, and know how to quickly access information that you need more in depth knowledge on that just can't be memorized. Tack on some laws, regulations, insurance... congratulations, you just graduated pharmacy school.