J. Welles Wilder: Original Evidence Needed

Evidence boundary

Original indicator definitions and edition, rather than a bibliographic mention.

Earlier unsupported scores, precise rule claims and financial stories are not carried into the current edition. The original address remains available, but this notice is excluded from the current search inventory and sitemap.

A supported next step

Choose the exact public syllabus or original text needed for your learning question. A missing source should not be replaced with a plausible biography, guessed price or invented return.

Learning Concepts and Fresh Cases

An indicator calculation, an interpretation of its output and an account decision are separate tasks. A remembered name such as RSI or ATR does not establish the exact original formula, initialisation or sampling convention. A software library can implement a variation that requires its own identity.

For an invented short sequence, specify which definition you intend to test before calculating. Identify warmup and missing observations as questions for the original text or implementation documentation. Compare outputs only when the inputs and conventions match; do not call a numerical disagreement a strategy failure.

Keep RSI, ATR, SAR, ADX and directional-movement vocabulary in the learning trail. Precise attribution remains pending the original edition. A useful artifact contains formula source, units, initialisation assumptions and the distinction between testing calculation correctness and measuring an independently validated trading effect.

Retained Vocabulary Reading Trail

RSI (Relative Strength Index), ATR (Average True Range), Parabolic SAR, ADX (Average Directional Index), Directional Movement (+DI/-DI), volatility-based position sizing.

This vocabulary preserves the earlier topic coverage. It is a list of research leads, not a verified private rulebook. Any numerical setting or author-specific parameter needs its original definition and scope before being used or attributed.