Check back at the current status of spatial methods

I think it's good to be transparent about this, but we are going to get a lot of questions about why we are normalizing if this is the case, so we should be prepared to answer those...

_Originally posted by @allyhawkins in https://github.com/AlexsLemonade/training-modules/pull/957#discussion_r2977328381_

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I'm opening this issue as a way future reminder for when we get closer to teaching the first spatial workshop. This issue tracks taking some time to make sure we're up to date on any big/relevant development in spatial methods, in particular normalization, that we need to be aware of when teaching.