#Increasingly precise measurements of the advance of the perihelion of Mercury show a shift greater than predicted by relativity, well beyond the margin of error.<ref>In a complicated or contrived series of calculations that most physics majors cannot duplicate even after learning them, the theory of general relativity was conformed to match Mercury's then-observed precession of 5600.0 arc-seconds per century. Subsequently, however, more sophisticated technology has measured a different value of this precession (5599.7 arc-seconds per century, with a margin of error of only 0.01), and leading promoters of relativity (such as Professor Clifford Will) have omitted this in listing tests confirming relativity.</ref> | #Increasingly precise measurements of the advance of the perihelion of Mercury show a shift greater than predicted by relativity, well beyond the margin of error.<ref>In a complicated or contrived series of calculations that most physics majors cannot duplicate even after learning them, the theory of general relativity was conformed to match Mercury's then-observed precession of 5600.0 arc-seconds per century. Subsequently, however, more sophisticated technology has measured a different value of this precession (5599.7 arc-seconds per century, with a margin of error of only 0.01), and leading promoters of relativity (such as Professor Clifford Will) have omitted this in listing tests confirming relativity.</ref> |