[Tempest1981]

So based on that, do we A) fix/improve our quality controls, or B) get rid of them entirely?

[scaryspooky]

c) use our brains instead of looking for a stamp

For most stick construction you can clearly see a 2x4 or 2x6 will or won't support the load given the checking and knot size. Code, though, requires a grade stamp.