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I'm basically replying to this comment so I can find it again. I think your point about unsafe functions being fine as long as access to them is only possible

• angersock 14y ago
  This is exactly my experience working with engine code--there are some very clean, fast, precise, and horrifically unsafe functions in our rendering system and other places that are acceptable because we can make guarantees about what data gets there from elsewhere. The mental image is an access panel, behind which lay hundreds of whirling razor-sharp gears--presumably if you open it you know what you're doing and are careful. This is what people pushing for abstraction are about, and why they're correct in some cases.