I think it should be somewhat obvious that it will be impossible for us to avoid the absolute worst of global warming. Humans simply don't have the capability to act in the coordinated, political way that is necessary. Somehow holding out hope that we'll all come to our senses and things will change is like holding out hope that we'll never have any wars again. It is just not compatible with human nature. I'd love it…
We can and act that way... Unfortunately, for most people on earth their CO2 consumption will have to go up significantly for them to have an improved quality of life. The large swath of population that doesn't believe in global warming is far less important than the large swath that is anti-nuclear. China, India, etc will need substantial energy to improve their quality of life and their populations are so large rel…
Except that even the minimum reactor size (for technical, security and proliferation reasons) mandates extremely large investment in terms of capital and space, which in turn leads to ownership by large intransparent conglomerates, bickering by NIMBYs, clearances, costly audits and years of planning and validation.
Renewables plus storage on the other hand just get cheaper by automation and are relatively affordable. Any larger company can afford cash and space for solar on the roof plus a PowerPack in the backyard.
Knowledge and learning rate for that track advances at an order of magnitude faster rate than for fission or fusion.
In terms of scaling up as quickly as needed, nuclear is dead in the water.