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Rule playground · about 8 min

Combining conditions

Join rules with and, or and not, see what each does to the belief, and avoid the precedence trap.

1. Three parts on AAPL

   Trend, momentum and volume, asked as separate questions and combined in several ways:

   {
     "model": "ora-fin1",
     "state": {
       "symbol": "AAPL"
     },
     "questions": {
       "trend": {
         "type": "yes_no",
         "ask": "C > sma(C, 50)"
       },
       "momentum": {
         "type": "yes_no",
         "ask": "rsi(C, 14) > 50"
       },
       "volume": {
         "type": "yes_no",
         "ask": "V > 1.5 * avg(V, 20)"
       },
       "all_three": {
         "type": "yes_no",
         "ask": "C > sma(C, 50) and rsi(C, 14) > 50 and V > 1.5 * avg(V, 20)"
       },
       "any_of": {
         "type": "yes_no",
         "ask": "C > sma(C, 50) or rsi(C, 14) > 50 or V > 1.5 * avg(V, 20)"
       },
       "no_parens": {
         "type": "yes_no",
         "ask": "C > sma(C, 50) or rsi(C, 14) > 50 and V > 1.5 * avg(V, 20)"
       },
       "parens": {
         "type": "yes_no",
         "ask": "(C > sma(C, 50) or rsi(C, 14) > 50) and V > 1.5 * avg(V, 20)"
       },
       "not_trend": {
         "type": "yes_no",
         "ask": "not C > sma(C, 50)"
       }
     }
   }

   Open this in the Playground

2. The answers

   Session of 2026-10-30:

   Question	Rule	Belief
   trend	C > sma(C, 50)	0.9119
   momentum	rsi(C, 14) > 50	0.8179
   volume	V > 1.5 * avg(V, 20)	0.7437
   all_three	C > sma(C, 50) and rsi(C, 14) > 50 and V > 1.5 * avg(V, 20)	0.7437
   any_of	C > sma(C, 50) or rsi(C, 14) > 50 or V > 1.5 * avg(V, 20)	0.9119
   no_parens	C > sma(C, 50) or rsi(C, 14) > 50 and V > 1.5 * avg(V, 20)	0.9119
   parens	(C > sma(C, 50) or rsi(C, 14) > 50) and V > 1.5 * avg(V, 20)	0.7437
   not_trend	not C > sma(C, 50)	0.0881

3. and takes the weakest part

   all_three is 0.7437, the lowest of 0.9119, 0.8179 and 0.7437. One weak condition holds a setup down, which is the point: a setup is only as true as its least true part.

4. or takes the strongest

   any_of is 0.9119, the highest of the three. Use it for alternatives: either of two patterns, or a regime switch.

5. Brackets change the meaning

   and binds tighter than or. Without brackets, a or b and c is a or (b and c): 0.9119. With them, (a or b) and c is 0.7437. Bracket every mix.

6. not flips it

   not C > sma(C, 50) is 1 − 0.9119 = 0.0881. It is the same as writing C <= sma(C, 50).

7. Ask the parts too

   Send each condition as its own question next to the combined one. It costs a few tokens and tells you which part decided the answer.

Information, not investment advice. Every number on this page is a real response for the session shown; answers change with each session.

What's next

• Offsets and windows
• Operators and beliefs