Paul discusses ways a parent or grandparent might explain 2 Funds for Life to a young adult. In the discussion Paul suggests using the following tables to make a handful of important decisions.
Tables 1-4 from his Follow the Math comments-

Table 1

Table 2

Table 3

Table 4

Equity Index Returns (1928-2022) to compare the returns of major equity asset classes
Table B13 to show what happens when you combine a small amount of small cap value with a mostly bond portfolio
Table B14A to show the impact of combining a small amount small cap value with a large cap blend fund

The first objective is to help a young investor understand how a target date fund works and why it is likely to provide a reliable source of income for the balance of their life.

The second objective is to show a young investor how a small amount of a small cap value fund, along with a target date fund, will likely help build an investment portfolio that will allow them to retire with substantially more income and leave more to their heirs.

For the parent or grandparent it will be helpful to watch the videos on Fixed and Flexible Distributions.