If new investors want to be cautious, consider buying some shares before the next earnings announcement. Then, add to the position after the company confesses and gives guidance for the year ahead. This is an example of being prudent and not fearful. In conclusion: I've learned that in the past four quarters RDS disappointed on EPS for two of those quarters. Looking at that same reality from a positive perspective, it surprised on the upside for two of those quarters. Like most opportunities in life, the glass -- or in this case the Shel" -- is either half-full or half-empty. At the time of publication the author had a position in RDS.A.Follow @m8a2r1This article was written by an independent contributor, separate from TheStreet's regular news coverage. Make smarter trading decisions and provide investment ideas that could help make you richer. Bryan Ashenberg does the dirty work so you don't have to!