What CIA, CPA, and CFA Prepare You to Do
A practical look at internal audit, Thai public accounting, and investment analysis through an owner’s questions and a hypothetical factory.
Supaket
Notes on things I care about
A Faster Website Without Overspending
Eight essays on measuring and removing work, scaling a system, understanding cost per request, and testing a plan you can verify.
e-Withholding Tax at 1% Under Ministerial Regulation No. 402: How to Trace Payments in Your Accounts
Short answer: Ministerial Regulation No. 402 was published in the Royal Gazette on October 9, 2026, and sets a 1% withholding tax rate for specified income paid from January 1, 2026, through December ...
We Ended the Office Lease: Try Full-Time WFH Before Deciding Long Term
We have ended the office lease and intend to try working from home (WFH) full time for three or six months to see whether it suits the team. There are no trial results yet from which to say it is work...
Economics for Business
Eight connected essays move from production and costs through profit, competition, pricing, and practical business choices.
When the Team Is WFH 100%, What Is the Office For?
The team can work from home, but one morning a customer mails an original contract to the company. Who receives the envelope, opens it, sends it to the authorized signer, and gets it back out if a res...
Durable Objects: Rules for AI Agents Working on One Case
If two AI agents receive a refund request from the same customer at the same time, which one knows whether the request has already been approved? And who is actually allowed to issue the payment? Clou...
From Daily Office Work to WFH 100%: What Must Change?
On Monday morning, one employee finishes a task at home but cannot hand it off because a manager's approval is still sitting in a chat. Another is waiting for information from the same team and does n...
A Ga Li Go
Set a glass of cold water on a table. The ice slowly melts, more drops gather on the outside, and the water grows warmer. You know the glass is different from when you first set it down, even without ...
Why I Built This Site Around Reading
Imagine opening an article on your phone while you're waiting for someone. You have a few minutes, but first you have to scroll past menus and a large image to find the text. By the time you realize i...