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A comment on My Developer friends are upset about Apple vs Amazon. Parent comment

Re:My Developer friends are upset about Apple vs Amazon by 18pfsmt on Sunday February 03, 2013 @07:06PM (#5161779)
I'm not sure what you are talking about, but the Price:Earnings ratio is not a guess. It is based on past SEC filings. To suggest as much indicates a significant lack of understanding on your part, and I am really not sure what business you have discussing this topic with anybody.

Edit: I realize that Forward P/E is different from P/E, but various analysts use various numbers for Forward P/E, so it is not a definitive metric in the first place.

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Re:My Developer friends are upset about Apple vs Amazon by YZF on Sunday February 03, 2013 @08:20PM (#5161946)
The comment above spoke about "this fundamental valuation number" regarding FORWARD P/E. Forward P/E is a guess (== varius analysts use various numbes == Almost always wrong sometimes in a major way). That's why I made the comment. I understand perfectly well what P/E is.

EDIT: Companies also manipulate E in various ways so even though P/E is supposedly not as fictitious as forward P/E you also have to be careful with that number.

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