When you create `Literal[1]` annotation and then create `Literal[True]` annotation, in the second case you will actually get `Literal[1]` instead. This is happening because `typing` performs caching of the outcome of parameterizing generics and `hash(True)` is equal to `hash(1)`. I think this behavior is incorrect and may lead to unexpected results.

Why is this inaccuracy important?
Consider the following example:

```python
from typing import Literal

SomeUsefulAlias = Literal[1, "abc"]

def func(arg: Literal[True, "abc"]):
    if arg is not True:
        arg.capitalize()
```

If we look at `func.__annotations__["arg"]`, we will see `Literal[1, 'abc']`. According to the new annotation, we can pass the value `1` to `func`, and this will lead to an attribute error, as you've already understood. Thus, proper runtime type checking cannot be performed.