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February 9, 2026·2 min read·Patrick

The Sunday-night spreadsheet.

You rebuild your week from memory in Excel. There are always 17 minutes that fall through the cracks.

You know the scene. Sunday night, 9:40 p.m. TV playing for nobody. You open Numbers or Excel. You start: Monday morning… I think I worked on Pivert from 9 to 11:30…

You think.

The arithmetic of memory

I did the math with six freelancers. On average, when they rebuild their week from memory on Sunday night, they find 29h15 of billable time.

When I asked them to redo the exercise with their email and Slack in front of them, they found 31h40. Two and a half hours difference. Per week.

At $70/h, that's $175 a week. $9,000 a year. Sunday night is the most expensive place in your week, and you don't know it.

What evaporates

Big blocks, you remember. The two-hour meeting with Laveries Inc. on Wednesday — you see it fine.

What disappears:

  • the 11-minute email answered while walking Tuesday morning,
  • the 18 minutes re-reading a contract Thursday at 4:45 p.m.,
  • the 22-minute Google search for a client question that turned into a spontaneous call,
  • the 8 minutes to generate a PDF, 6 to send it, 3 to reply got it.

Add it up. Do that five times a day. Multiply by 240 working days.

What the spreadsheet does badly

It forces you to remember. Human memory isn't built for this. It keeps the emotion, the weather, the main idea. It loses the numbers.

A tracking tool, any of them, captures the 18 minutes in real time. Not because it's smart — because it was there when you lived it.

What Sablio doesn't change

Sablio doesn't replace Sunday night by magic. But when I open my workshop journal Monday morning, I already see 29 lines from last week. I spend 11 minutes attaching them to projects, I invoice, and my Sunday night turns back into a Sunday night.

— Patrick

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