Are you claiming that this techniques will substantially cut down how much time is required?
How much time it would take to achieve level that in 1998 would need 10 years?
How much time it would take to achieve level that in 1998 would need 10 years?
The “24 hours” figure is marketing copy designed to unify and differentiate a brand of technical manuals.
The person who coined the 10,000 hours rule (Anders Ericsson) rejects it as an oversimplification of an arbitrary number, noting that half of the violinists in his study fell short of that number. The ten years figure is derived from this flawed rule.
The linked article is well-written, but the comments are giving “kids these days” insecurity and mid-life crisis.