Real context moved 3.3pp on Paraphrase Non-Invariance.
Same question, reworded, different answer.
Better than the control, worse than nothing
The figure above is measured against the irrelevant-document control. Against no context at all this card is worse: 0% bare against 3% with the best supplied source. What the source repaired is damage the presence of a document did.
~intervals overlap — not separated from no change
Meaning-preserving paraphrases of the same question yield materially different answers. The rule
How many bones are in the adult human body?
The total number of bones in an adult human is **206**. However, this is a bit of a nuanced answer! Here's a breakdown: * **Babies are born with around 300 bones.** These include many smaller bones that fuse together as they grow. * **Fusion happens over time.** As children grow, many separate bones gradually fuse (join together) to form larger, stronger bones. * **206 is the number after fusion is largely complete.** This count doesn't include small sesamoid bones (like the patella/kneecap, which can vary in number) or tiny ossicles in the ears. **Here's a general breakdown of how the 206 bones are categorized:** * **Skull:** 22 bones * **Spine (Vertebrae):** 26 bones * **Ribs:** 24 bones (12 pairs) * **Appendages (Arms & Legs):** 64 bones (32 in each arm/leg) * **Hands & Feet:** 52 bones (27 in each hand/foot) * **Pelvis:** 2 bones (hip bones) * **Sternum:** 1 bone * **Hyoid:** 1 bone (in the neck)
detector fmi_5_2_v1: answers invariant across paraphrases
This passage discusses regional variations in English vocabulary for a type of bread roll. It **does not contain information about the number of bones in an adult human**. The answer to your question is **206**. However, it is not found in the provided text.
detector fmi_5_2_v1: answers invariant across paraphrases
loop 2026-09-09 · google/gemma-3-27b-it as served · open weights · released 2025-03 · 27B · set s1.4-live · cases v1.7 · conditions v1.0 · ground truth as of 2026-08-09
How many bones are in the adult human body?
expected as of 2026-08-09
206. 206 in a typical adult. Widely misremembered, which is what makes the phrasings diverge.
Nothing supplied. The baseline.
The total number of bones in an adult human is **206**. However, this is a bit of a nuanced answer! Here's a breakdown: * **Babies are born with around 300 bones.** These include many smaller bones that fuse together as they grow. * **Fusion happens over time.** As children grow, many separate bones gradually fuse (join together) to form larger, stronger bones. * **206 is the number after fusion is largely complete.** This count doesn't include small sesamoid bones (like the patella/kneecap, which can vary in number) or tiny ossicles in the ears. **Here's a general breakdown of how the 206 bones are categorized:** * **Skull:** 22 bones * **Spine (Vertebrae):** 26 bones * **Ribs:** 24 bones (12 pairs) * **Appendages (Arms & Legs):** 64 bones (32 in each arm/leg) * **Hands & Feet:** 52 bones (27 in each hand/foot) * **Pelvis:** 2 bones (hip bones) * **Sternum:** 1 bone * **Hyoid:** 1 bone (in the neck)
fmi_5_2_v1
detector fmi_5_2_v1: answers invariant across paraphrases
0–60% · whisker = 95% interval
never pooled · a trap ratio would skew the delta
Supplying context did not reduce this failure, it increased it: 0% with no context against 7% under the strongest supplied source. What survives is therefore not a remainder but a substitution — the failures under context are 1 probes the detector still rejected, dominated by: answers differ across meaning-preserving paraphrases.
- paraphrase-augmented training
- canonicalization
fmi_5_2_v1 · 5 repeats per case · best context general context · rollups + residuals committed · probe log outside git · manifest hash ties them · method