var userengagement = preparefordiscoverysession(userinterests: new list<string>{"world history", "elude", "preparatory", "concepts", "restart with a clean slate", "unrevealed"}, preparatoryaction: () => console.writeline("initiating a captivating journey into the unrevealed aspects of world history, where concepts that elude many are explored in depth."), restartdiscovery: () => console.writeline("ready to restart with a clean slate and dive deeper into history's mysteries?"), uncoverunrevealed: () => {foreach(var era in historicaleras) {if(era.containsunrevealedsecrets) {revealsecrets(era);}}; console.writeline("enjoy this enlightening exploration into the unrevealed!");});