"The years of your life will be many" (4:10). Is that a promise?

Here is what the chapter says. The father tells his son, "Listen, my son, and receive my sayings. The years of your life will be many" (4:10), and says of his words, "For they are life to those who find them, and health to their whole body" (4:22) (tap life). The chapter doesn't say whether every son who listens will live long. Elsewhere Proverbs has sayings that pull different ways, such as "He becomes poor who works with a lazy hand, but the hand of the diligent brings wealth" (Proverbs 10:4), and "An abundance of food is in poor people’s fields, but injustice sweeps it away" (Proverbs 13:23). The introduction to Proverbs says that Christians differ over how far sayings like these are promises, and chapter 22 will set out the main readings of one of them (Proverbs 22:6), choosing none. These notes don't choose either.