The simple result is reflected as more advanced training & education, publicly accessible knowledge, rooted in core concepts; A core body or level of capability & understanding requires a bit of actual experience though not exact/high detail knowledge to effect an outcome. Several things can be done to improve the chance and/or degree of a positive outcome for skill checks, such as: high Attributes & contextual/situational adjustments (ex: Steady Aim, etc. for combat). Penalties for any Lack of Capability apply.
The system uses a progressive scale that incorporates the ideas of Knowledge, quality of Positive Outcome & a target difficulty reflecting it:
Example Scope of Knowledge/Experience/Competence, Language Fluency: “Humans walk upright on 2 legs, live in homes they design, have babies, and as mammals have live births after 9 months.”
Typical target difficulty is DC 15; Learning/Knowledge (skill/Trait) level(s) 5-10.
i20 Skills REPLACE d20 skill proficiency: Add the skill level + modifiers to the check ( Proficiency Bonus not used).
A single Result Check to assess Success or Failure AND quality which may be impacted by conditions which indicate a Lack of Capability (Unfamiliar, Unproficient, etc.). The GM can { } Narrate it, and players may request an appropriate impact when anything other than a basic outcome is indicated. Character Points are Rewarded by the GM to improve Skills (and other Features). > i20 Skill Map