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#The theory of relativity has discontinuities whereby the limit of a physical quantity as a variable (such as mass or velocity) approaches a fixed value, but it is not the same as the physical quantity at that fixed value.  For example, the limit of momentum as mass approaches 0 and velocity approaches the speed of light is not equal to the momentum of (massless) light.

#The theory of relativity has discontinuities whereby the limit of a physical quantity as a variable (such as mass or velocity) approaches a fixed value, but it is not the same as the physical quantity at that fixed value.  For example, the limit of momentum as mass approaches 0 and velocity approaches the speed of light is not equal to the momentum of (massless) light.

#Discontinuities in General Relativity are well-recognized.<ref>https://link.springer.com/article/10.1007/BF01654285</ref>

#Discontinuities in General Relativity are well-recognized.<ref>https://link.springer.com/article/10.1007/BF01654285</ref>

''For a discussion of rebuttals to these counterarguments, see [[Essay:Rebuttal to Counterexamples to Relativity]].''

''For a discussion of rebuttals to these counterarguments, see [[Essay:Rebuttal to Counterexamples to Relativity]].''