[emmab]

Because AIXI_tl has failure modes (it doesn't model itself as being embedded in its environment so it can't ensure its own survival) demonstrating that any approach which is just a weaker version of it will have those same problems.

> That said it is also not computable with finite time or resources, so it is unclear what relevance it has to practical applications.

You can define it as space or time-bound and then it's finite but still intractable.