Hello ,
I am reading the book Probability: Logic of Science. I have a doubt on one of
the concept in the book, I want to get some insight which is lacking. If you
can, do reply,

Chap:19 in the COMMENTS section:
Solving for an overdetermined set of equations, Jaynes says that if we have n
variables to be estimated, from N equation,N>n. Each linear equation is a
measurement coming from a different experiment and with a different accuracy.
Now the solution will be linear combination of all the equations.
According to the comment:If we have 3 equations and two unknown and out of the 3
experiments whose output is represented by the 3 equations one experiment is
assumed to be completely accurate. Now if we solve using only two equations out
of the 3 equations.Then the solution is more accurate if we take equation which
have equal accuracy as compared to combination of equations which is completely
accurate with a less accurate equation.

Thanking you,
Regards,
Neeraj