If a PDF asks for unnecessary permissions or comes from a file-sharing site (e.g., MediaFire, random blogspot), it is not verified.
Be skeptical of:
Scribd, DocStoc, CourseHero, and similar user-upload sites sometimes host Balance Benders PDFs. Even if a file claims to be “verified,” these platforms do not vet every upload. Many files are missing pages, scanned upside down, or contain user-added notes that ruin the puzzle logic. More dangerously, some uploaded PDFs have been modified to include redirect links or macros. Never trust a “Balance Benders PDF verified” label from an unknown user. balance benders pdf verified
Spend the $9.99 at The Critical Thinking Co. or check your library’s Hoopla account. Your computer (and your students’ patience) will thank you. If a PDF asks for unnecessary permissions or