A SLOW LEARNER SAID:

Why so many silent alphabets in english words, like in -

KNIFE; KNIGHT; KNOW; PSYCHOLOGY; OFTEN; PRONOUNCIATION; SIGN; HIGH; DAUGHTER;SIGN; BOMB; SOLUM; DEPOT; WATCH; KNEE; KNOWLEDGE;SCHOOL; BRIDGE; COMB; DEBT; PEOPLE; BOAT; WRITE etc .....

Why same alphabet should be pronounced in different manner, like in -
BUT     PUT  CUT;
KITE    KING    KILL   KISS  KIND; 
STATE   STAR  SAME  SAM;
COME    CONE;
TAP     TAPE;
KEEN    KEPT; 
SON     SOAP
TON     TONE;
COME    COMB;
RID     RIDE 
SPIN    SPINE
NO      NONE 
READ    READ [pastence]
READ    READY
US      USE
SO      SONG     SOON  
FILM    FINE              
HUG     HUMOUR       
BOTH    BOTHER            etc....

Why the pronounciation is similar in some words with different alphabets and meanings, like in - 
SEA - SEE
EYES - ICE
SENT - CENT
MEAT - MEET
WHOLE - HOLE
KNEW - NEW
SON - SUN
NIGHT - KNIGHT
THOUGH - TOUGH
BEEN - BEAN
I -EYE
FOR - FUR
HERE - HEAR
TO - TWO
WEAR - WHERE
YOU - U
ARE - OR
NO - KNOW
OUR - HOUR
BY - BYE - BUY
LIVE - LEAVE
OF - OFF
RIGHT - WRITE
SIGHT - SITE - CITE
GREAT - GRATE
WEIGHT  - WAIT
BREAK  - BRAKE
FARM  - FORM
STEEL  - STEAL
SO   -  SOW
TO   -   TWO
SUM  -   SOME          etc.....

This really troubles me.