Idunno. There are some things that can be safely assumed. It's a safe assumption that without access to fire, you can't cook food. You can't easily work metal without fire, which rules out virtually all technological progress past the stone age, if we can even make it to the stone age without cooking.
You can say there might be workarounds and other methods, but you can also say that maybe some things see with dark instead of light. Just because you can hypothesize doesn't mean those hypotheses are potentially right.