>
>
> >Take a simple example: suppose I want to know what plants are common in
> my area. I drive around and write down what I see. I will only see what is
> visible from roads which will give a data set that is skewed, and riddled
> with omission. I doesn't matter if I drive on every road in the county, I
> will see only plants which occur by roads.
>

And thus someone could likely draw meaningful conclusions from that data,
such as "Vegetation easily visible from the road by the untrained observer
driving a car."  Again, it's not about the data--it's about the
interpretation.

Pete, you know that I choke on many overextended and biased "scientific"
papers, such as Sánchez‐Bayo's.  The point is, that any data set can be
interpreted differently.  What's important is that we always check closely
on the interpretations.

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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