EMS — 23 things I got wrong before I got it right
Posting this as a discussion rather than a claim: EMS — 23 things I got wrong before I got it right.
A quoted lead time is a commitment you can evaluate. Measuring quoted against actual across several orders tells you more about an operation than the raw speed does.
Median transit is the useful statistic. The minimum is a story about one shipment and the mean is dragged around by a single hold.
Regional stock replaces an international lane with a domestic one. That is a structural change to the distribution, not a marginal improvement, and it is why the warehouse question matters more than the carrier question.
Not medical advice, obviously, and nothing here is approved for human use. One person with a spreadsheet.
best — the order this archive was captured in
Why this board reports by lane and not by supplier.
Two members ordering from the same operation, in the same month, can see completely different transit times because they are on different routes with different carriers and different clearance points. Averaging them produces a supplier-level number that predicts nothing for either of them.
A lane — origin, destination, carrier, month — is the smallest thing that behaves consistently enough to be worth measuring. Once a route has a dozen reports behind it the median is genuinely useful, and that is what the tables on the source pages are built from.
Where the time actually goes, which I got wrong for two years.
Total transit is first mile, international leg, customs clearance and last mile. I had been attributing everything to the international leg because that is the part with the exotic-sounding name.
When I finally logged the stages separately, the international leg was the most consistent part of the whole journey. The variance was in clearance and in the domestic delivery at my end — neither of which the supplier controls. That reframed how I read every lane report on this board, and it is why the table separates the stages.
the last mile is where most of the variance lives
the last mile is where most of the variance lives
fatima_asante is right about regional stock. It changes the shape of the distribution, not just the mean.
ask which lines are actually held in the regional warehouse
Left up and added to the lane table. All four required fields were present, which is rarer than it should be.
Yes — regional stock is the single biggest variable and it barely gets mentioned outside this board.
Agreed. Reporting by lane rather than by supplier is what made the tables here actually predictive.
Total transit decomposes into first mile, international leg, clearance and last mile. Only the first two are meaningfully under the shipper’s control and most reported variance sits in the last two.
origin, destination, carrier, month — post all four or the report is noise
A lane is an origin, a destination, a carrier and a season. Change any one and the distribution changes, which is why supplier-level shipping averages are close to meaningless.
Push back: comparing a July transit with a February one on the same lane is not a comparison.
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