Security is indeed an important dimension because it holds the key (pun) for ever more important applications. I agree that a more detailed, like-for-like compa

Security is indeed an important dimension because it holds the key (pun) for ever more important applications. I agree that a more detailed, like-for-like comparison of software qualities across decades needs to be very careful. Applications have exploded in all domains. But then also the ranks of software engineers and their tools and ability to exchange best practices has exploded. The trouble with exponential curves is that a small difference in rates can create dramatic discrepancies.