Why are expression trees safer than reflection?

Question

In this answer to the question of the fastest way to determine if a property contains a given attribute, user Darin Dimitrov posited that expression trees are safer than reflect

Answer 1

The question as it is stated is why is expression trees safer then reflection.

The answer is that they are both using reflection.

Edit to clarify - MemberInfo.GetCustomAttributes is a reflection call.

http://msdn.microsoft.com/en-us/library/system.reflection.memberinfo.getcustomattributes(VS.71).aspx