If you're an employee of a company that offers a SEP IRA, your contributions count toward your traditional IRA contribution limit rather than the limit for defined contribution plans. For example, as of 2013, you can contribute up to $6,500 if you're 50 or older, or $5,500 if you're younger than 50.
Definition of skepticism 1: an attitude of doubt or a disposition to incredulity either in general or toward a particular object 2 a: the doctrine that true knowledge or knowledge in a particular area is uncertain
A person who is ignorant of the God of Abraham is a heathen. A person who worships other Gods is a pagan. A person who doesn't believe in god at all is called an athiest (a-without, theism-beliefs on god).