Not really since your helping the reader paint a mental picture based on what 당신 show them. I'd say the only time your really telling them is saying the 년 또는 what a letter to a character says. Though in regards to the letter it does help to 'show the font style and what type of parchment to give a person an idea that if they close their eyes they can see themselves 읽기 it. The only other time I'd say telling is okay and I'm kinda on the fence about it is if 당신 say something like for example Jack went for a run he was supposed to meet Jill that afternoon. 또는 like if your like quoting a daily schedule like For example Jack's daily routine was as followed. Get up, get dressed, go for a run, go 샤워 then get ready to go to class.
In general I'd say you've got to combine the two especially if your doing something like a fight scene 당신 can describe blood and gore in detail but, it's not recommended.
