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In programming, scope refers to the region of the program where a variable can be accessed and has a valid meaning. Variables can have either local or global scope. Local variables are declared within a function or block of code, while global variables can be accessed from any part of the program.

It is not generally permissible to have more than one variable with the same name in the same scope. This is because if two variables with the same name exist in the same scope, it creates ambiguity and confusion for the compiler (or interpreter) and the programmer. It becomes difficult to ascertain which variable is being referred to when a program needs to access that variable.

Let's consider a Python function as an example: ```python def example_function(): x = 5 x = 10 print(x) ``` In this example, the variable "x" is defined twice within the same scope (the "example_function" scope). However, since the second assignment reassigns the value of "x" to 10, rather than creating a new variable, there is no ambiguity, and the function prints the value 10. Now let's consider a situation where we have a global and a local variable with the same name: ```python x = 42 def example_function_2(): x = 10 print(x) example_function_2() print(x) ``` In this example, there are two variables called "x." However, they belong to different scopes, so there is no ambiguity. The local "x" in the function has a value of 10, and the global "x" has a value of 42. When "example_function_2()" is called, it prints 10, and when the global "x" is printed, it shows 42.

In conclusion, having more than one variable with the same name in the same scope can create ambiguity and confusion for both the programmer and the compiler (or interpreter). Therefore, it is not usually permissible. However, when the variables are in different scopes, the ambiguity is resolved, and the program functions correctly.