1---
2title: Move Complexity, Don't Hide It
3impact: MEDIUM
4tags: ux, teslers, complexity, simplicity
5---
6 
7## Move Complexity, Don't Hide It
8 
9Every system has irreducible complexity. The question is who handles it — the user or the system.
10 
11**Incorrect (complexity pushed to user):**
12 
13```tsx
14<input
15  type="text"
16  placeholder="Enter date as YYYY-MM-DDTHH:mm:ss.sssZ"
17/>
18```
19 
20**Correct (system absorbs complexity):**
21 
22```tsx
23<DatePicker
24  onChange={(date) => setDate(date.toISOString())}
25/>
26```
27 
28Reference: [Tesler's Law](https://lawsofux.com/teslers-law/)
29