-/// Moreover, uninitialized memory is special in that the compiler knows that
-/// it does not have a fixed value. This makes it undefined behavior to have
-/// uninitialized data in a variable even if that variable has an integer type,
-/// which otherwise can hold any *fixed* bit pattern:
+/// Moreover, uninitialized memory is special in that it does not have a fixed value ("fixed"
+/// meaning "it won't change without being written to"). Reading the same uninitialized byte
+/// multiple times can give different results. This makes it undefined behavior to have
+/// uninitialized data in a variable even if that variable has an integer type, which otherwise can
+/// hold any *fixed* bit pattern: