I Have Random Thoughts

was watching some stuff on youtube , making Fire starters , but whats this ? , you gotta light it first , Duh ! , but saw one using a sandwich baggie and water , interesting , you tighten the baggie with water in it and use it like a magnifying glass with the sun , cool ! , some other one said starting a fire with Sugar , then he says and add some potassium something or other and i thought oh forget that , lol