Capstone: Write a Study Design from the Spec

A memo says "slippage model to be chosen from three options by best out-of-sample fit". Which rubric lines fail?

• Only "Full costs"
• "Numbers fixed" and "No leakage": a modelling choice is made on test results
• None, as long as all three options are reported

A memo has every rule fixed in advance, but its results table already shows "Sharpe 1.4". What is wrong?

• Nothing, a good Sharpe is the goal
• A design memo is frozen before any fold runs, so its results table must be blank
• The Sharpe should be deflated first