Now listen, you who say, “Today or tomorrow we will go to this or that city,
spend a year there, carry on business and make money.”
Why, you do not even know what will happen tomorrow. What is your life?
You are a mist that appears for a little while and then vanishes.
Some of you might be old enough to remember that radios, televisions, and other pieces,
of so called old school electronics, all once required vacuum tubes in order to work.
Wikipedia offers us a small history lesson:
A vacuum tube, an electron tube, valve (British usage) or tube (North America),
is a device that controls electric current flow in a high vacuum between electrodes
to which an electric potential difference has been applied.
The type known as a thermionic tube or thermionic valve uses the phenomenon of
thermionic emission of electrons from a hot cathode and is used for a number of
fundamental electronic functions such as signal amplification and current rectification.
Non-thermionic types, such as a vacuum phototube however,
achieve electron emission through the photoelectric effect,
and are used for such purposes as the detection of light intensities.
In both types, the electrons are accelerated from the cathode to the
anode by the electric field in the tube.
The simplest vacuum tube, the diode, invented in 1904 by John Ambrose Fleming,
contains only a heated electron-emitting cathode and an anode.
Electrons can only flow in one direction through the device—from the cathode to the anode.
Adding one or more control grids within the tube allows the current between the
cathode and anode to be controlled by the voltage on the grids.
These devices became a key component of electronic circuits for the first half
of the twentieth century. They were crucial to the development of radio, television,
radar, sound recording and reproduction, long-distance telephone networks,
and analog and early digital computers.
Although some applications had used earlier technologies such as the spark gap transmitter
for radio or mechanical computers for computing,
it was the invention of the thermionic vacuum tube that made these technologies
widespread and practical, and created the discipline of electronics.
In the 1940s, the invention of semiconductor devices made it possible
to produce solid-state devices, which are smaller, more efficient, reliable,
durable, safer, and more economical than thermionic tubes.
Beginning in the mid-1960s, thermionic tubes were being replaced by the transistor.
However, the cathode-ray tube (CRT) remained the basis for television monitors
and oscilloscopes until the early 21st century.
Thermionic tubes are still used in some applications,
such as the magnetron used in microwave ovens, certain high-frequency amplifiers,
and amplifiers that audio enthusiasts prefer for their “warmer” tube sound.
As a young man hoping to tune into his favorite radio program during the early 1940’s,
The Shadow, my dad would eagerly await the week’s latest new episode…
“Who knows what evil lurks in the hearts of men? The Shadow knows.”
Yet if the radio suddenly blew a tube, there’d better be a replacement or there’d be no
new episode but rather, there would only be silence.
Recently rummaging through dad’s old attic, I actually found an old box
of replacement tubes.
Dad always wanted to be prepared lest he miss an episode of his favorite show.
He never felt the need to toss the tubes despite the advancements in technology.
He wanted to be prepared…old school or not.
And just like Dad, I prefer to always be prepared for the unexpected.
So imagine this move…
We only thought we had everything plotted and planned…but this house,
this new nemesis, is testing our mettle on preparedness.
A leaking roof…
a need for an electrician…
a need for a plumber,
the need for a painter…
throw in a few trees that needed to be cut from around the house…
and the list of needs has grown exponentially.
Nothing that had been anticipated.
Just today, we experienced yet another unexpected surprise.
A gentleman came out to grind the stumps from those cut trees—
the trees that were only adding insult to the house and roof,
and as he worked his grinder, he hit the main waterline.
The sun was quickly setting, the rains were moving in,
and we had big problems on our hands.
Yes, we did think to have the utility lines marked…
somehow, someone forgot to mark the water line.
Ode to the unexpected.
So the one thing we do know…life is not neat nor tidy…
no matter how much we plan or wish it were.
So my advise… always expect the unexpected!
That Unexpected Last Day
Would it not be good for us to put away the vain dream of countless earthly days and face
up to the blunt fact that our days on earth may actually not be many?
For the true church, there is always the possibility that Christ may return.
Some good and serious souls hold this to be more than a possibility,
for it seems to them as it seems to this writer that
“the earth is grown old and the judgment is near,”
and the voices of the holy prophets are sounding in our ears.
And when He comes, there will not be a moment’s notice,
not an added day or hour in which to make frantic last-minute preparations.
“Be careful, or your hearts will be weighed down with dissipation,
drunkenness and the anxieties of life, and that day will close on you unexpectedly like a trap.
For it will come upon all those who live on the face of the whole earth.
Be always on the watch, and pray that you may be able to escape all that is about to happen,
and that you may be able to stand before the Son of Man” (Luke 21:34-36).