Hopkins's method: Test your CV like a scientist, no asterisks

In 1908 I took on Schlitz Beer's budget. They were fifth in their market. Their advertising stacked the words "Pure", "Quality", "Finest". Every rival used the same words. Nobody was selling.

I toured the brewery. They had water distilled six times. A glass oven that fired at 1,500 degrees. A four-stage malt filter. Every major brewer did the same things — none of them told the customer.

We rewrote the ad: "Schlitz steam-cleans every bottle four times." Plain. Unornamented. Milk-clear. Same beer. Same price. In three months Schlitz reached first in market. Nobody said "what a silly ad." Because the ad carried evidence, not claim.

Science is for those who don't trust other people's opinions

The day I began in advertising, half the clients treated it as art. They would tell me "Trust your instinct, Claude." Instinct is an expensive guide. I have watched marketing budgets burn for years over a drop of inaccuracy I could not name.

My discipline was always this: two versions, two coupons, two counts. Keep the winner, drop the loser. Then split the winner again. Then count again. Our ads improved every month — not by instinct but by method.

I imagined the same discipline could one day be brought to job applications. As of 2026 the imagined day has come. Sending a CV in five different versions to five different recruiters is no longer a logistical impossibility; one sharing service generates five different links and counts which gets opened. Schlitz's six-week test now fits inside a single week.

What do we measure in a CV?

We measured four things in advertising. They map straight to job applications:

1. Open rate. In ads: newspaper circulation / coupon returns. In CVs: applications sent / links opened. Moving forward without knowing which subject line opens more is arrogance.
2. Time spent on page. In ads: average reading time before the coupon got clipped. In CVs — closer measurement — per-page minutes. Did the recruiter abandon page one in 12 seconds, or linger four minutes on page three?
3. Hot spots. Eye-tracking maps on print posters. The CV equivalent: "which section did the recruiter read longest?". Often a surprise. Not the achievement section you expected — usually a side project. I trust no CV whose data I haven't seen myself.
4. Return. In ads: repeat purchasers. In CVs: recruiters who open it again. If a recruiter who lingered on the first opening reopens within the day, that is the moment to write to them. Not three days later. That moment.

First-week experiment

Here is the disciplinary exercise. Split your CV into three versions. Same facts, three different emphases. Each version a separate tracked link. Send to three different recruiters, three different listings. Wait a week.

At the end you will hold:

• Version A: Open rate X%, average dwell Y minutes, longest page Z.
• Version B: Open rate X%, average dwell Y minutes, longest page Z.
• Version C: Open rate X%, average dwell Y minutes, longest page Z.

One week, three counts, one winner. In week two you split the winner — a smaller change. Measure again. Eight weeks in, your CV is at Schlitz's sales velocity. Not your instinct — your count — is speaking.

What does a "coupon" look like in 2026?

In the 1910s a coupon was a paper rectangle printed by us. The customer would clip it, bring it to the shop, claim a discount. We counted which newspaper, which headline, drove the sales.

Today's equivalent is a tracked link. You send the CV not as a PDF attachment, but as a /v/[slug] URL. The recruiter sees no difference — they open and read. You see a big difference: every open notifies you; you know which page held attention; when the recruiter returns for a second look, you have a moment for a message.

Schlitz did not patent its bottle-washing process in one second. Today's CV tracking tools are likewise unpatented:Lurien handles all of this, requires no technical knowledge, starts free. Schlitz had to declare the bottle washing — you don't need to declare your tracking. You simply make better applications.

Three important rules for a scientific CV

In sixty years of advertising I never broke three rules. They map to CVs intact:

1. One variable. Change one thing between two versions; keep everything else fixed. If you changed the headline, keep the work history identical. Otherwise you can't know which change made the difference. Science does not count uncontrolled tests.
2. Sufficient sample. Sending one CV to two recruiters is not a test. Any number you get from fewer than 5-7 channels is noise. We used 1,000 coupons as a floor in advertising. For CVs the number is smaller: 10 applicationsminimum.
3. Discipline the count. "My gut says" is not counting. "Version B opened 52%, A opened 31%" is counting. Write it down. A table you'll look at three months later.

Last word: Be skeptical

My final advice to a young job-seeker is this: be your own most skeptical reader. Not because your CV won't speak; but question how you know it speaks. Does the "expert" adjective on page one have a reason? Does the recruiter read "team player," or does their eye not pause on that line at all?

The way to answer those questions is not instinct. It is counting. It wasn't instinct that pulled Schlitz from fifth to first — it was bottle-washing counts. It is counting that will pull your CV out of the unanswered-applications pile. Try it for three weeks. By the end of week three you'll laugh at your old CV.