What’s wrong with Imperial’s model?
The Imperial model is built using 13,000 lines of code. But this is where GIGO comes in. If any of their assumptions are wrong — the results of the model can be wildly inaccurate.
In computer science and statistics, garbage in, garbage out (GIGO) is the concept that flawed, or nonsense input data produces nonsense output or “garbage”.
Some of their assumptions are probably inaccurate. In particular, it’s difficult to know how much of the population has already been/is infected with a very mild disease without widespread testing.
Without this information, any projection into the future is limited.