Today Sam Greenfield, Manager of System Development of the Sports Illustrated Magazine, gave a talk on the photographic technology behind SI. During the Q&A section, there was a great conversation:
Audience: A few years ago National Geographic got into some issues where they modified the cover image…
Sam: Yes, I know about that. They put two pyramids together.
Audience: So what’s your opinion on that?
Sam: That’s an ethical question. I am not the right person to ask about it. 
(Pause) Actually there are guidelines on what you can do and cannot do. [snip...]
