Privacy and data use
Privacy policy
What Count & Chance processes in interactive labs, hosting logs, contact email, consent controls, and advertising.
Published August 19, 2026 / Updated August 20, 2026
Effective date: August 19, 2026. This policy describes the site operated by Count & Chance from Singapore. Privacy questions can be sent to privacy@ertaiba.com.
Interactive experiments
Experiment parameters and synthetic samples are calculated in the browser. The current version does not require an account, upload a dataset, or store experiment inputs in a site database. Controls and the teaching seed are written into the page URL so a reload or copied experiment link can restore the same setup. That URL can remain in browser history and can appear in hosting request logs or same-site navigation records. Do not add personal or confidential information to an experiment URL. The site's referrer policy limits cross-site requests to the site origin rather than sending the full experiment path and query.
Server and network logs
The production site is intended to be hosted by Tencent Cloud CVM (Singapore). Like most web hosting, the provider may process IP address, request time, requested URL, referrer, user agent, response status, and security signals to deliver the site, prevent abuse, and diagnose failures. The configured retention description is Nginx access and error logs rotate daily and are retained for 10 rotations. Provider practices and legal retention duties may apply independently.
If you contact the publication, the message, sender address, headers, and any information you choose to include are processed to respond, investigate a correction, maintain an accountability record, or protect the service. Do not email sensitive records. Messages may be retained while the request is active and afterward when necessary for security, legal obligations, or a correction history.
Cookies, local storage, and analytics
The current first-party experiment code does not set a tracking cookie or use browser storage for advertising profiles. No standalone audience analytics service is configured in this build. Necessary hosting or security infrastructure may still use limited technical storage.
Advertising
No advertising publisher or advertising script is currently configured. On advertising-enabled pages, third-party vendors, including Google, use cookies to serve ads based on a reader's prior visits to this site or other websites. Google's use of advertising cookies enables Google and its partners to serve ads based on those visits. Google describes this processing in How Google uses information from sites or apps that use its services.
Google and other participating advertising providers may receive a reader's IP address and may use cookies, web beacons, device or browser identifiers, and similar technologies to serve, limit, secure, and measure advertising. The exact providers and permitted purposes depend on the consent choices and regional message that apply to the visit.
Readers can opt out of personalized advertising in Google Ads Settings. Other third-party vendors or ad networks may also serve or measure ads. The vendors selected for European advertising are disclosed in the consent message; Google also publishes its current ad technology partner list, including links to provider privacy information and available opt-out choices.
No advertising consent platform is active while advertising is unconfigured. Where consent is required, an eligible consent message must appear before nonessential advertising storage or personalized ads are used. It must offer equally understandable consent and non-consent choices. On advertising-enabled pages, readers in applicable European regions can use Privacy and cookie settings in the footer to withdraw consent and reopen the message. Browser settings can also block or delete cookies, though this may affect saved advertising preferences.
This privacy-policy page does not load advertising or a consent-message tag. That keeps the disclosure available before a reader makes a consent choice.
Sharing and sale
The operator does not sell reader-submitted personal information. Advertising identifiers and cross-site advertising activity may be treated as a sale or sharing under some U.S. state laws even when no money changes hands. Where those laws apply, the public advertising configuration must provide the available opt-out through its U.S. state regulations message. Information may otherwise be processed by hosting, email, security, consent, and advertising providers only for their stated services, or disclosed when required by law, to protect rights and security, or during a legitimate transfer of the publication with appropriate notice.
International processing and rights
Service providers may process information in countries different from yours. Depending on location, you may have rights to access, correct, delete, restrict, object, withdraw consent, or complain to a supervisory authority. Send a request to the privacy address above. Identity may need to be verified without collecting more information than reasonably necessary.
Children and changes
The publication is written for a general adult learning audience and is not directed to children. It does not knowingly request personal information from children. Material policy changes receive a new effective date and, when appropriate, a prominent notice before they take effect.