Important tools invented by men

The chisel

Throughout history, humans carved wood and stone to create and protect themselves. The chisel was his best ally since without it he would continue to live under a pile of stones. According to reputable sources , chisels with more than 10,000 years old have been found. And remember that the Egyptians used it to carve the pyramids and Michelangelo, to sculpt the David. As if that were not enough, it was also necessary to make fishing boats.

The hook

It is undoubtedly one of the simplest and most useful tools since for thousands of years it has been possible to engage in fishing, without the dangers of hunting or the hard work of a farm for humans. The first of these elements was made with wood by the man from Cromagnon, about 30,000 years ago.




The candle

The first ones are at least 3,000 years old. Candles became important elements of religious ceremonies during the Middle Ages, although they were also used to light streets or watch food go by. However, the candles turned out to be expensive, smelly and inefficient, so the migration to other elements was left aside. Nowadays, with the exception of electricity cuts, they are used for romantic moments, even more so if one takes into account that many of the current ones are flavored.

The needle

Perhaps there is no other element as simple as this, which aims to unite materials with each other. The first ones were made in bone about 30,000 years ago. Its first use was to make clothes and protect humans from the weather. More recently, they allowed the manufacture of sails for ships that arrived around the globe. They were even used as weapons by the ninja.

The lathe

It is a machine for machining parts per revolution by removing material in the form of chips using a cutting tool. It makes manual labor a simpler task, allowing to increase production and lower costs. The lathe is considered the queen machine, since it allows the machining of a multitude of materials, and the limit, in most cases, is imposed by the skill of the operator. In fact, the lathe is the only machine tool capable of building itself. It is about 2,300 years old. In 1480, Da Vinci designed a lathe that used a pedal to get moving, something that allowed it to be in constant rotation.

The clock

It not only keeps the schedule of trains, meetings or calls in order. Since the human being was human he tried to develop devices to know the time. The sundial was probably invented more than 7,000 years ago. But since those devices did not work during the night, another one was needed to do it. It was so that the Greeks developed the water clock or clepsydra. The first consisted of a clay vessel containing water to a certain extent, with a hole in the base of a size sufficient to ensure the exit of the liquid at a certain speed and, therefore, at a fixed time. The bowl was marked with several stripes that indicated the time in the different seasons of the year. In 1656, the German mathematician Christian Huygens created the first pendulum clock, able to have an error of just one minute per day. In 1761, a British carpenter named John Harrison manufactured the first marine chronometer, capable of not desynchronizing itself with the movement of the ship. In the 19th century, the first personal watches appeared.

The saw

According to a Greek legend, the first saw was created by a boy named Perdix who, while apprenticed to his uncle, was inspired to create this tool by looking at the spine of a fish. The saw, by making it easier to cut wood or other materials, allowed humans to build everything. Using a saw is one of the skills every man should have. Beyond the legend, the ancient Egyptians used saws more than 5,000 years ago. It was not until 1777 that Samuel Miller patented the first circular saw in England. Forbes recalls that sometime in 1900 a resident of the Appalachian Mountains made music from a saw. These melodies were very popular in the United States between 1920 and 1930.

Home Renovations Checklist

Undertaking a complete renovation of the home implies well prepare in advance the list of works but also the order of work. You can hardly imagine the renovation of paintings before the removal of partitions for example. To avoid unpleasant surprises, it is necessary to set up a schedule. The deadlines will be as important as the logical order. To begin, take time on the preparations (house plans with a renovation, budget of the building site) to have an optimal base of departure.

The order of renovation work

Obviously, in your planning, you will only have to enter the elements that you want to modify. The list presented here is an overall plan for a typical renovation of your home:

Demolition: removal of partitions, chimneys or bulky areas, demolition is the number one phase of the process.
Rehabilitation or replacement of structural work: After the destruction, renovation.
Realize locations in the house: bled, ducts, evacuations, create all access for future developments
Embed electrical and plumbing equipment in previously created locations
Facade: if the house requires it, perform a cleanup
Insulation: Put in place the thermal and sound insulation throughout the house
Ceiling: coat walls and ceilings with plaster, mortar or cement
Screed: Apply a layer of mortar on the floor to level the floor and accommodate the flooring (tiles, parquet …)
Laying of floor coverings and wall coverings (wallpaper, paneling, tiles …)
Installation of joinery (depending on your choice of floor and walls)
Laying paints in different rooms of the house

In conclusion

The order of your renovation work will depend on the elements to be reviewed. Always start with the big works to go more and more towards the interior and finishes of the house.

The 7 Guidelines for hiring a new employee Competence

This quality should come on top of your recruitment list of guidelines. Does the potential employee possess the relevant skill, education, experience to complete the tasks at hand? While considering competence, credentials are everything. This means the person with more papers and experience is more qualified for the job than someone else with less.


Competence alone doesn’t make the potential employee great for the job. For instance, some factors such as teamwork should be put into consideration. This is where compatibility becomes essential. Can the potential get along easily with existing and potential employees and clients? The person should be harmonious and flexible; otherwise, s/he might bring problems.

With the overemphasis on compatibility, however, you can scare away some great potential employees. After all, people are different. S/he should have some required level of compatibility.


Ensure that the candidate is really dedicated and is serious about working for your organization for a long time. Is the candidate really committed to working for you are s/he is just passing through? Is s/he just looking for something better? You should evaluate the candidates’ working history and duration spent each job.

But serial employees aren’t entirely bad. Some jobs that hire on contracts may play a role.


Can the candidate offer more than what is needed? Can s/he deliver on tasks that require extra effort and creativity? The more capable a candidate is the more responsible and more potential s/he is for growth.

4 Steps to get started doing business

Step 1: Conducting personal evaluation and industry analysis

First, you should begin by asking yourself some questions. What skills do you already have? What do you really like doing? What is the reason behind your business idea? How much capital do you have for investment? Will you provide a service or product?

These questions should narrow your focus and help you determine the objectives of your venture. Remember, this step needs not act as a halting point for your idea, but rather, aid you in the thinking and planning process.

There is a lot you need to start a business beyond your passion. Besides, you need to set goals and make proper plans. What are your weaknesses? What are your strengths? At this level, you can conduct a SWOT analysis of yourself. The SWOT analysis basically involves evaluation of aspects of your business idea namely Strengths, Weaknesses, Opportunity and Strengths.

Once you settle on a business idea that reflects your objectives and lifestyle, you need conduct an industry analysis to understand the niche holding your business idea. Who is going to buy your products or services? Who are your competitors? You can do this analysis by conducting Google searches, read books touching on your target industry, researching key people, and so on.

Step 2: Make it legal and start the planning process

This step entails registering your business and getting relevant certificates and documents of operation. You need to know the pros and cons of a variety of business formations, tax laws, insurance requirements, and your rights and so on. If necessary, work closely with a commercial attorney to obtain useful advice. Depending on the type of business, there may be regional requirements that are unique from the state regulations. This is the time to find out every bit of legal requirements of your business. Other things you need to decide at this stage include business name and logos.

All goals, however, can only be realized through the vehicle of a plan. A business plan is, therefore, very necessary regardless whether you are financing the business yourself or not. The role of a business plan is to make decisions on how much capital is being availed for investment, what part of the business will receive how much amount of the investment and so on. In simple terms, a plan is like a roadmap which you will use to chart your progress and outline the direction of your venture. However, try making your business plan as simple as possible since you will need to use it over and over for a long time.

Step 3: Get financed and set up the shop

This step involves determining the location of your business and set up the premises. Please note that the location of your business relies heavily on the type of clients you are targeting, promotions that you can run and even the length of time you will take to grow. Besides, you need to consider other factors such as the price of your products and the target profit margins, access to public transportation or parking, visibility, regional rules and overall distribution of competitors.

Step 4: Trial and Error

In this step, your business should get on its feet and begin its operations. You may make mistakes regardless of whether you are experienced in running the business or starting the business for the first time. It is natural. Although some mistakes can be devastating, they make you learn some lessons as your business continues to grow. One good thing about being the owner of a business is that you own the mistakes you make and also decide on the direction to take thereafter.

Yokohama Port 150th Anniversary

横浜港 147回目の開港記念日を迎える!
横浜市が開港150周年基本計画を発表 (6/1更新)

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