Some things are more interesting to a child at one age or another, or too dangerous, but the ages vary with different people. Principles are better than rules, for interests and safety.
Physical conditions matter, too. A fire on grass is safer than a fire in a dry desert in autumn, or in the windy Springtime.
Interests that are wonderful and richly full of learning for one child might seem repulsive or as dry as the desert to another child. Good! That's fine! Paying attention to what they like could help you let them know of hobbies, volunteer work, or jobs they might consider, as teens, or as adults, that match their interests and strengths.
The link below goes to a long list of jobs, from various discussions over the past fifteen years. It might be fun, as you read through them to consider jobs that were rare or nonexistent before the past year or two, or jobs that might fade away within a few years.
SandraDodd.com/jobs
photo by Elise Lauterbach
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