when you thought about inventions, it may be comfortable things around us.
There are several types of artifacts.
it used to do the activities of everyday life, such as devices to help in eating, bathing, cooking dress excretion,to clean the house and others.
In addition to these tools, there are also tools that used to communicate.
It can be connected, we can contact with others without the place and time as obstacles.
Before that , people will have different facilities.
Life is quite complicated and difficult, such as cooking in the past must use the firewood in the fire,which take a long time.
Food preservation, it can not keep for a long time.
But now There is a tool that helps the food to stay longer. And can be eaten throughout the season
as well such as microwave.
Communication can be difficult. Write a letter to someone, it takes a long time to send.
But this contact was not difficult anymore.There are tools that allows us to communicate faster, easier, such as computers and phones.
Illness is important too. In the past time, when we hurt and use herbal treatment. Medicine is not progress.
But now that treatment is not difficult anymore because there are modern medical equipment and medications,it make the treatment easier.