Group 1 - The core viewpoint of the articles indicates that while the number of shoppers during the Black Friday shopping season is expected to reach a historical high, the average spending is projected to decline due to concerns over tariffs and rising living costs [1][3]. - The National Retail Federation anticipates that 187 million consumers will participate in the shopping season, representing over half of the U.S. population, but Deloitte's survey shows that average planned spending will decrease by 4% year-over-year to $622 [1][3]. - Retailers are responding to cautious consumer sentiment by extending promotional periods, with Walmart launching multiple rounds of promotions and Target offering significant discounts on popular items [2]. Group 2 - Concerns over tariffs have led to increased prices for imported goods, with 85% of consumers expecting tariffs to raise the prices of gifts and holiday items [3]. - Consumer confidence has dropped to its lowest level since the onset of the global trade war initiated by the Trump administration, casting a shadow over future sales prospects [3]. - The National Retail Federation predicts a slight slowdown in holiday sales growth rates to 3.7%-4.2% for November and December, although total sales are expected to exceed $1 trillion for the first time [3].