Re: Re:Compromise? No. As I said, iridium has a density of 22,650 kg/m^3. The human brain probably has a density around 1,000 kg/m^3, so it's not nearly as dense as iridium. It's also way behind platinum, gold, uranium, lead, and many others that are too numerous to list. The brain isn't even close to the densest material on earth. Sorry.