As already stated, these are in no priority order. anyone of them could be critical:
2. Continuing automation will be offsetting the loss of well-paid full-paid full-time jobs with poorly-paid part-time ones or lifelong unemployment from then onwards;
3. Exports to Third World countries are already either declining or about to collapse due to debt and lack of sufficient scientific innovation to break into high-value trading network of the dozen or so advanced countries;
4. National debt will still be growing rather than stabilising.