Answer from cs61c-eg (Ramanarayan Vasudevan 15938560) for Question 1
If data can be considered anything a simple security hole is to misrepresent what that data is simply by assuming that it is something else. In the sense that data on my computer may be given as floats, but someone may change this interpretation to be as integers, this creates a good deal of confusion and anxiety. One solution (although a terrible idea) would be to force data to only be seen as one thing. The tradeoff would be a loss of flexibility for the user.