Deductions & credits

I understand your point.  Please let me ask another way.  Why did the "refund-o-meter"amount drastically change after I paid for TTax?  Also, why doesn't it change when I go back and edit the Federal section (like removing the 1099, which I did)?  
I mean, with regard to your last sentence, I am not able to make changes with any effect to "before" and "after" as reflected on the "refund-o-meter".  I'm using the online version.