Question about deserializing some numbers (bug??)

[Gribouillis]

It turns out that pickle.loads() starts by converting its argument to BytesIO (unless the argument is a str, see in pickle.py), and it turns out that a numpy float can be converted to a BytesIO

>>> import numpy as np
>>> thing = np.float64(0.34104)
>>> import io
>>> file = io.BytesIO(thing)
>>> file.getvalue()
b'\x88.\xa8o\x99\xd3\xd5?'

It means that pickle.loads() thinks that it receives a sequence of bytes. This leaves two questions open

1. Shouldn't pickle.loads() check more thoroughly its arguments?
   
2. Why are numpy floats convertible to BytesIO?