It was long ago. 15 to 16 years ago. Announced construction check-up - to appear in so much, carrying an alarming suitcase. Contents - pads for a couple of days, soap, nuts, needles, underwear, socks. And a lamp. With spare batteries and a spare lamp.

The inspector walks, the content checks. It is my turn.

Conserves are not outdated, a shave is available, threads are available.

Turn on the lamp!

I Include. The light.

Change the battery!

I change. Everything is great.

Where is the lamp?

-Comrade Captain, this is a LED lamp, and it contains 12 pieces of these lamps. They cannot burn at the same time. Only with an atomic explosion, because a semiconductor.

Then there was an atomic explosion. Would you stay without a lamp?

Why do I need a lamp?