NathanOlder wrote: ↑14 Dec 2017, 17:20
But the whole thing I'm saying is, the piece isn't on a path the driver until it hits the halo.
I accept that. Yes there's a theoritical possibility for this, even though the design of the halo factors that in.
Have a look at the bigger picture though: say a rear wing disintegrates into several tiny pieces in front of another driver. What would be less safe: the cockpit as it is now, or with a halo? I think the risk of sharp pieces being deflected by the halo towards the body, is completely outweighted by the decrease in risk of the halo blocking pieces going towards the body of the driver anyway.
Also note we have to bring the risk you mentioned in comparison with the decrease in risk by the halo blocking large pieces of debris. Currently a piece like the Massa spring is actually no longer an issue as helmet designs are reinforced. Bigger pieces that transfer large amounts of kynetic energy are a bigger issue.
If needed, the fia could mandate parts of the driver suit to be made of kevlar. That should stop sharp, small pieces from cutting through.