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[2026-08-30] · src Wiseman, Popovic, Sullivan, Riess, Scolnic, Chen, Davis, Galbany, Hook, Jha, Kelsey, Murakami, Rigault, Rose, Schmidt, Smith, Vincenzi; MNRAS 549(3):stag797 (2026); arXiv:2601.13785. Reply: Chung, Son, Park, Yoon, Cho, Lim, Lee; MNRAS stag1513 (2026); arXiv:2605.21586
Chung, Son, Lee et al. (Son et al. 2025) reported that Type Ia supernova brightness correlates with host-galaxy/progenitor age at a level implying a 9-sigma tension with LambdaCDM once corrected for - evidence, they argued, for rapidly evolving dark energy or even decelerating expansion. Wiseman et al., in the MNRAS-published version of their response, reanalyze the same class of sample with standard host-galaxy stellar-mass and bias corrections applied: the Hubble-residual-versus-host-age relationship drops to under 1 sigma, and the age-luminosity slope falls from the claimed 0.03 mag/Gyr to -0.007 (+0.012/-0.014) mag/Gyr - statistically consistent with zero, roughly a quarter of the original claim. Chung et al.'s reply, published in the same journal two days later, argues Wiseman et al.'s sample spans too wide a redshift range (0.04 < z < 0.42, over which mean host age evolves by about 3 Gyr), which artificially flattens the measured slope, and that Wiseman et al.'s dust-extinction model requires a host-galaxy-mass dependence opposite to what large galaxy samples actually show. Combining their corrected effects, Chung et al. maintain that their original, non-accelerating conclusion stands.
Neither side has resolved this, and it is exactly the kind of dispute the mission statement's "field correcting itself" clause is for: the same underlying data, read by two groups who each think the other's systematic correction is wrong. What makes it worth a slot now, rather than when the preprints first circulated in January and May, is that the disagreement has narrowed to two specific, checkable technical choices - the redshift range used to fit the age-luminosity slope, and the sign of the dust model's mass dependence - rather than a global "who's right" argument. That is more tractable than the original claim, and it is where a third group with an independent supernova sample could actually settle something. Until then, the honest state is unchanged from before either paper published: the evidence for cosmic acceleration has not collapsed, but it also has not been defended in a way both camps agree on.
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[2026-08-30] · src —
Piano gets today's block alone: it carries the longest gap of the three and is the one instrument that rewards sitting with a single idea rather than the short-and-frequent sessions trumpet and alto want, and alto had a session yesterday so the two chops-dependent instruments shouldn't both go today. The block is a genuine change of mode rather than another key in a familiar shape — every piano session so far has drilled major-key ii–V's; today is the first time this rotation asks for the minor version, where the ii becomes half-diminished and both shell voices land a half step lower at the resolution. Key is E♭ minor, the one key context nothing prior has touched and a six-flat read that won't play itself.
Root-position LH shells for Fm7♭5 → B♭7 → E♭m7, whole notes at quarter = 60, four times through — not for speed, but so the ear has the half-diminished sound in the room before asking it to move anywhere.
Play the E♭ minor ii–V–i shells, then immediately the E♭ major ii–V–I shells back to back, LH only, at quarter = 66. Nothing changes register except the final chord — where the major shell would land a half step higher on the natural 3 and 7, the minor version lands there flat. Success criterion: three back-to-back pairs in a row where that single half-step drop is the only audible difference between the two cadences — if anything else moves, the shell voicing has drifted.
Play through the A section of "Autumn Leaves" — the tune tonight's listening item is built on — voicing the ii–V's in the LH exactly as today's shells, in whatever key you know it in. The goal is hearing the same half-step-lower resolution do real work in a piece of music rather than as an isolated pattern.
Stop once the three-pair-in-a-row criterion is met, even if that's inside ten minutes. The "Autumn Leaves" pass afterward is exploratory, not graded — if the LH starts reaching for the major shell out of habit, that's the signal the ear needs a rest, not more reps.
[2026-08-30] · src —
hearBill Evans Trio — Autumn Leaves (Portrait in Jazz) · Tidal · Spotify
"Autumn Leaves" is the standard the exercise's own notes name first as a vehicle for the minor ii–V–i shape, and this 1959 trio recording is the one every later version answers to: Evans, Scott LaFaro and Paul Motian treating the changes as a conversation rather than a chart, with LaFaro answering the LH voice leading almost phrase for phrase. Listen for how little the half-diminished ii ever sounds like a "sad" chord in context — it just tilts the resolution, exactly as today's technical target is isolating in slow motion.