Will wrote:
That looks like the test run by Fine Woodworking. I have one of their

books with that article.

The Mortise and tenon is marginally weaker, but tends to fail in such
a
manner as to leave the furniture in one piece -- albeit a bit wobbly.

Will, I believe that you quoted the article accurately. However, I
have another article published by FWW that says just the opposite. The
M&T was the king of strength, showing three times the more than twice
the strength of double biscuits. This was tested in a laboratory.

Personally, I think double biscuits are pretty strong for many types of
joinery and "good enough" so the discussion is academic anyway.

Bob