The Split-Second Ledger

CURRENT SHIFT CADENCE

12.4s/customer

TARGET (KERR STANDARD)

11.8s/customer

DELTA ACCUMULATED

0.6s/customer

COMPOUND LOSS MODEL

ΔR = N × Δt × λ
where N=customers/hr, Δt=split delta, λ=$/sec throughput

N	Δt	λ	ΔR/hr
82	0.6	$4.25	$209.61
120	0.6	$4.25	$306.00
150	0.6	$4.25	$382.50

SOURCE: 2026 Q2 POS telemetry (Herndon District)

THE SPLIT LOG

EVENT	OBSERVED (s)	TARGET (s)	Δ (s)	COST ($)
Receipt print (thermal 165°C)	2.1	1.8	+0.3	$1.28
Bagging sequence (3-item)	4.2	3.9	+0.3	$1.28
Card reader handshake	1.9	1.5	+0.4	$1.70
Small talk (unscripted)	2.8	2.0	+0.8	$3.40
TOTAL DELTA	11.0	9.2	+1.8	$7.66

Note: Small talk cost assumes $4.25/sec throughput during peak. Off-peak: $2.10/sec.