This document discusses the importance of questioning claims and statistics that are presented rather than accepting them at face value. It recommends practicing simple questions like who says so, how do they know, what's missing, and what's changed to determine whether a number or claim makes sense or if important context is missing. Mastering these questions can help people be less susceptible to deception from those trying to manipulate statistics or claims for their own ends. The document also recommends Darrell Huff's book "How to Lie with Statistics" as further reading on this topic.

1. Tom Bell

3. Do they matter?

5. The crooks know all the tricks…

6. …honest people must learn them in self defence.

8. Everyone is selling something...

10. Some questions to ask a number...

11. Who says so?

12. How do they know?

13. What’s missing?

14. What’s changed?

15. Does it make sense?

16. They matter

17. They don’t have to be difficult to master

18. Practise them, in your own way, in your time.

19. Recommended reading…
Darrell Huff
How to Lie with Statistics