# EXECUTION_SUBSTRATE_STRATEGY.md (Legacy/Comparative/Constraint Sections)

This file contains legacy, comparative, and constraint-related sections from the original EXECUTION_SUBSTRATE_STRATEGY.md, moved here for archival and compliance. See the main file for the current, canonical execution substrate strategy.

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- simple-enough legacy surface for demonstration and historical audit
- an execution surface that can be inspected on constrained legacy tooling as well as modern hosts
- That does not replace the other substrates.
- if the same contract can run on a historically constrained legacy CPU path
- do not let the phrase `qutrit` replace a plain explanation of the execution rules
- legacy-core execution further reduces the plausibility that the result depends on undeclared modern CPU behavior alone
- legacy-core and other legible substrates also reduce the plausibility of the result being an artifact of malware-like, evasive, or anti-analysis execution patterns