Content of survival kit depends on greatly where you are.
But this guy proves that in Finland it is enough with a knife and firemaking kit. And knowlidge.

https://www.youtube.com/watch?v=KLOsnBaWVBA

I will check the video out, thanks! I still think even if you have a lot of knowledge it's still good to have gear. Given a knife and a firesteel I would probably do alright if I knew ahead of time where I was going and when. But recreating everything from scratch in the woods is very slow and inefficient compared to taking along proper gear.

Certainly knowledge plus gear is the best situation. But knowledge is probably most important since many survival situation revolve around decisions made as to actions to take.

Coming to a flooding stream,do you cross or not? Do we climb this cliff, even though we don't have a rope or climbing gear? I see lightning, should we seek shelter or forge ahead?

The gear has no value unless the owner knows how and when to use it properly - indeed the goodies can get you deeper into trouble if not employed appropriately.