Before cloning
ce:num:3, thing:Fred

After cloning, setting ce num to 5
After cloning, setting ce thing name to Barney
ce:num:5, thing:Barney
ceShallowClone:num:3, thing:Barney
cdDeepClone:num:3, thing:Fred

Notice that changing ce thing name to Barney changed ceShallowClone's thing name to Barney.
This is because the copy was shallow, and ce's thing and ceShallowClone's thing point to the same Thing.
Notice that ceDeepClone's thing name is Fred. This is because the deep copy resulted in ceDeepClone having its own Thing.