You have a very balanced perspective on investing in Memecoin and Techcoin:

1. **Internal impact**:

- **Cash flow cycle and practical applications**: Techcoin often has specific technology applications, while Memecoin attracts thanks to the power of the community.

- **Backers**: The presence of strong backers like Elon Musk with $PEPE and Vitalik with $ENS creates great trust.

- **Circulating supply**: Affects the scarcity and value of coins/tokens.

2. **External forces**:

- **Community culture and future beliefs**: Very important factor for Memecoin.

- **Communication**: Marketing and media attention are indispensable factors.

For example:

- **$PEPE**: The attraction of Elon Musk and meme culture icon.

- **$ENS**: Potential to become a popular domain name project with Vitalik's presence.

Conclusion: If a coin/token has both internal and external factors, the growth potential will be huge, regardless of whether it is Memecoin or Techcoin. Combining technical analysis will help optimize profits.