Mary Baker Eddy writes in "No and Yes" (p. 17): "In Science there is no fallen state of being; for therein is no inverted image of God, no escape from the focal radiation of the infinite. Hence the unreality of error, and the truth of the Scripture, that there is 'none beside Him.'"
"The focal radiation of the infinite," enlightening human consciousness as it does, reveals that which Deity comprehends and embraces within His focus, that which is included in the radiation of infinite Truth, Life, and Love, God. Logically, whatever Deity comprehends and embraces, and He understands and includes all that is real, is forever spiritual and perfect.
Obviously, whatever is not within the range of infinite comprehension and inclusion is not within the realm of spiritual factuality. Thus sin, disease, and death, all that is not divinely created, can only seem to be. Evil, error, abnormalities of all sorts, are hypothetical falsities, regardless of how real they may seem to afflicted humanity.