可以當作冷戰時期的政治隐喻片(共産主義/麥卡錫主義），也可以當成科幻恐怖片（尤其最後有《釜山行》的感覺）

其他解讀思路/角度：

1. Double-Uncanny-Identity Issue-Social Context (fear of losing individuality; warning of the invasion of communism in the 1950s: “you’re the next one!”);

2. “People not believing”(ideology & fear)- the outbreak of pandemic (柏拉圖洞穴的寓言, 見到光明的人返回洞穴無人相信);

3. “Everyone is suspicious”(ideology & fear-even your closest ones changes immediately)-cultural revolution/fascism (where the society longing for unity/everyone feeling good in the group);

4. 愛與痛-what makes a human human, 是人生意義的永恒主題;

5. reality-dream and reality;

6. identity issue- body/mind continuity