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Give the author a break. He's a journalist, not a biologist. The last real science class he took was probably in high school.

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The last real science class I took was in high school, too. I don't actually have a problem with the metaphor, I was merely replying to the parent comment who said he was referring to the "speed of light".

The top level comment on this thread was saying he found the metaphor jarring - I don't personally find it jarring.

Right - all the more reason he shouldn't use photosynthesis in his analogies!

It can't be any worse than people who misuse the hammer and anvil metaphor.

Many say "You are the anvil, and I am the hammer" to imply superiority of the hammer bashing down on the poor anvil. However in reality, the hammer always breaks and the anvil always maintains.

Ah! I have another example like that. Sometimes people use the term 'quantum leap' to describe some huge change. As it turns out, a quantum leap is a very small change in the state of an electron, a very tiny event, nothing to write home about.

The point about a quantum leap is that it is discrete, rather than continuous, so, for example, a "quantum leap in understanding" implies a progress in understanding that cannot be broken down into a progression of small increments of understanding.

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