Does macbook air with 8 gig of ram work well?
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...and only you can decide what "work well" means.
Does it work? Yes. Well for some? Yes. So does it work well? Depends on what you want to do with it. Any implication of "into the future" in that question? You may need more than minimum specs in the future, and no way to add more to Silicon Macs.
Silicon Macs will use what is called SWAP when more RAM is needed than available. SWAP leans on faux RAM by using space on the SSD. Some argue that this has potential to wear out the SSD faster. Others argue that the SSD- even in heavy SWAP usage- will outlive the rest of the Mac. The only way we know for sure arrives in a few more years where, after years of this being put to the test in real world usage, none-to-many minimum spec Mac buyers start reporting worn out SSDs... or not.
The objective crowd (not fan extremists nor anti-fan extremists) seem to generally agree that 8GB is not enough for life of device. Many will write that Apple should up baseline specs... and there are strong rumors that M3 Macs will do that by going to 12GB (and 12GB multiples for additional RAM too).
Whether 8GB or 12GB, the general (objective) recommendation is step up at least one tier (to 16GB or 24GB) unless you present and future needs are relatively modest. Unlike when Macs were based on Intel, there's no updating hardware later if you need more. Instead, it is a "buy a whole new Mac" proposition with any such need.
The question to ask is not "can 8GB work for me now?" but "will 8GB be enough 5-7 years from now if I still own this Mac?" Because the best answer to this type of question is realized by applying peak load to this Mac, not today load.