Why that is important to use english in science instead of malay?

This is because the whole world uses the language as an information and/or technology language. How dangerous it will be if we try to use Bahasa, especially in school. See example below:-

Hardware = barangkeras

Software = baranglembut

Joystick = batang gembira

Plug and Play = cucuk dan main

Port = lubang

Server = pelayan

Client = pelanggan

Try to translate this:

ENGLISH:

That server gives a plug and play service to the client using either hardware or software joystick. The joystick goes into the port of the client.

Now in BAHASA:

Pelayan itu memberi pelanggannya layanan cucuk dan main dengan menggunakan batang gembira jenis keras atau lembut. Batang gembira itu dimasukkan ke dalam lubang pelanggan.

Now you know...WHY...