Analysis Summary:

The article is mostly accurate, presenting a general overview of Tupperware's history and current challenges. The claim about entrepreneurial women marketing Tupperware after WWII is generally supported by common knowledge, though not explicitly verified by the provided sources. The article has a slight positive slant, focusing on the enduring popularity of Tupperware.

Detailed Analysis:

• Claim:** Successfully marketed at parties by armies of entrepreneurial women.
  • Verification Source #5: Fails to cover this claim directly, but the Tupperware website showcases its products for food storage.
  • Internal Knowledge: This claim aligns with common knowledge about Tupperware's marketing strategy.
• Claim:** "Burping" plastic bowls popularized after World War II.
  • Verification Source #5: Fails to cover this claim directly.
  • Internal Knowledge: The "burping" feature is a well-known characteristic of Tupperware.
• Claim:** Being forced to redefine themselves in a new era, even via pop-up retail stores.
  • Verification Source #5: Fails to cover the pop-up retail stores specifically, but the website showcases Tupperware's ongoing presence and product lines, suggesting adaptation to a new era.

Supporting Evidence/Contradictions:

• The provided sources primarily focus on related topics such as sustainable servingware (Verification Source #1), issues with opening sealed containers (Verification Source #2), orphaned Tupperware lids (Verification Source #3), safety of storing hot food (Verification Source #4), and Tupperware's food storage products (Verification Source #5).
• None of the sources directly contradict the claims made in the article snippet.
• The lack of direct verification for some claims necessitates reliance on internal knowledge and general understanding of Tupperware's history.