As technology advances....

[rhu]

• Displaying the Tetragrammaton on a computer screen was not a problem because the image has to be repainted dozens of times a second, so we don't have to worry about erasing. With e-Ink (and I don't know if the Kindle uses this as well), once an image is drawn to the screen it stays there until changed. Are there now halachic problems with displaying text containing the Tetragrammaton?

• If cells are extracted from a living animal and cultured into foodstuffs, does that violate ever min he-chai, the law that says we may not eat a limb torn from a living animal?

Comments

[cnoocy]

Do the rabbis have a ruling about using explicitly ephemeral media? Is it permitted to write the Tetragrammaton using Scrabble tiles, for instance?

[sethg]

I don't know about the Tetragrammaton, but some permit playing Scrabble™ on Shabbat, so it seems that arranging tiles in a way that forms words is, arguably, not really writing.

[cnoocy]

Are there rulings about flip-dot displays?