Cardano founder Charles Hoskinson has issued a warning against rushing into post-quantum upgrades, highlighting potential risks to network performance. He emphasized the importance of balancing security with efficiency, given the uncertain timeline for quantum computing threats. Hoskinson pointed out that independent assessments, such as those from DARPA, are crucial in navigating these challenges. As the crypto community considers the implications of quantum computing, traders focusing on altcoins should evaluate how these developments might impact long-term strategies. Meanwhile, the fear and greed index remains a valuable tool for assessing market sentiment during ongoing technological upgrades.