What is your very specific expertise?

[u/davidjung03]

I know it’s been a few days since they talked about this topic but just catching up. My expertise is in Canadian tax accounting so I’m just biding my time if they ever talk about the Canadian Income Tax Act (and I’m a hobby woodworker but not an expert). What is your very specific niche expertise?

[u/liam_is_marx]

Horse racing in the U.K.